Home / 260,042,778,005.40-390,064,167,008.10-220,370,919,931.80

Finding the Fourth Proportional to 260,042,778,005.40, 390,064,167,008.10 and 220,370,919,931.80

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Solution

The fourth proportional to 260,042,778,005.40, 390,064,167,008.10 and 220,370,919,931.80 is: 330,556,379,897.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,042,778,005.40 : 390,064,167,008.10 = 220,370,919,931.80 : x
  2. Step 2: Convert to fraction form
    260,042,778,005.40/390,064,167,008.10 = 220,370,919,931.80/x
  3. Step 3: Cross multiply
    260,042,778,005.40x = 390,064,167,008.10 × 220,370,919,931.80
  4. Step 4: Simplify right side
    260,042,778,005.40x = 85,958,799,316,006,264,111,104
  5. Step 5: Solve for x
    x = 85,958,799,316,006,264,111,104/260,042,778,005.40
  6. Step 6: Final answer
    x = 330,556,379,897.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.