Home / 279,936,020.10-419,904,030.15-156,988,128.90

Finding the Fourth Proportional to 279,936,020.10, 419,904,030.15 and 156,988,128.90

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Solution

The fourth proportional to 279,936,020.10, 419,904,030.15 and 156,988,128.90 is: 235,482,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,020.10 : 419,904,030.15 = 156,988,128.90 : x
  2. Step 2: Convert to fraction form
    279,936,020.10/419,904,030.15 = 156,988,128.90/x
  3. Step 3: Cross multiply
    279,936,020.10x = 419,904,030.15 × 156,988,128.90
  4. Step 4: Simplify right side
    279,936,020.10x = 65,919,948,010,817,688
  5. Step 5: Solve for x
    x = 65,919,948,010,817,688/279,936,020.10
  6. Step 6: Final answer
    x = 235,482,193.35

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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.