Home / 285,350,656.80-428,025,985.20-186,715,207.20

Finding the Fourth Proportional to 285,350,656.80, 428,025,985.20 and 186,715,207.20

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Solution

The fourth proportional to 285,350,656.80, 428,025,985.20 and 186,715,207.20 is: 280,072,810.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,350,656.80 : 428,025,985.20 = 186,715,207.20 : x
  2. Step 2: Convert to fraction form
    285,350,656.80/428,025,985.20 = 186,715,207.20/x
  3. Step 3: Cross multiply
    285,350,656.80x = 428,025,985.20 × 186,715,207.20
  4. Step 4: Simplify right side
    285,350,656.80x = 79,918,960,513,602,128
  5. Step 5: Solve for x
    x = 79,918,960,513,602,128/285,350,656.80
  6. Step 6: Final answer
    x = 280,072,810.80

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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.