Home / 279,918,689.48-386,287,957.77-156,159,366.74

Finding the Fourth Proportional to 279,918,689.48, 386,287,957.77 and 156,159,366.74

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Solution

The fourth proportional to 279,918,689.48, 386,287,957.77 and 156,159,366.74 is: 215,500,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,918,689.48 : 386,287,957.77 = 156,159,366.74 : x
  2. Step 2: Convert to fraction form
    279,918,689.48/386,287,957.77 = 156,159,366.74/x
  3. Step 3: Cross multiply
    279,918,689.48x = 386,287,957.77 × 156,159,366.74
  4. Step 4: Simplify right side
    279,918,689.48x = 60,322,482,864,651,064
  5. Step 5: Solve for x
    x = 60,322,482,864,651,064/279,918,689.48
  6. Step 6: Final answer
    x = 215,500,018.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.