Home / 280,079,071.29-386,543,010.87-159,406,398.72

Finding the Fourth Proportional to 280,079,071.29, 386,543,010.87 and 159,406,398.72

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Solution

The fourth proportional to 280,079,071.29, 386,543,010.87 and 159,406,398.72 is: 220,000,120.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,079,071.29 : 386,543,010.87 = 159,406,398.72 : x
  2. Step 2: Convert to fraction form
    280,079,071.29/386,543,010.87 = 159,406,398.72/x
  3. Step 3: Cross multiply
    280,079,071.29x = 386,543,010.87 × 159,406,398.72
  4. Step 4: Simplify right side
    280,079,071.29x = 61,617,429,313,172,512
  5. Step 5: Solve for x
    x = 61,617,429,313,172,512/280,079,071.29
  6. Step 6: Final answer
    x = 220,000,120.07

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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.