Home / 261,467,999.40-392,201,999.10-220,653,330.60

Finding the Fourth Proportional to 261,467,999.40, 392,201,999.10 and 220,653,330.60

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Solution

The fourth proportional to 261,467,999.40, 392,201,999.10 and 220,653,330.60 is: 330,979,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,467,999.40 : 392,201,999.10 = 220,653,330.60 : x
  2. Step 2: Convert to fraction form
    261,467,999.40/392,201,999.10 = 220,653,330.60/x
  3. Step 3: Cross multiply
    261,467,999.40x = 392,201,999.10 × 220,653,330.60
  4. Step 4: Simplify right side
    261,467,999.40x = 86,540,677,369,393,200
  5. Step 5: Solve for x
    x = 86,540,677,369,393,200/261,467,999.40
  6. Step 6: Final answer
    x = 330,979,995.90

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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.