Home / 280,722,741.92-387,371,385.84-155,272,238

Finding the Fourth Proportional to 280,722,741.92, 387,371,385.84 and 155,272,238

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Solution

The fourth proportional to 280,722,741.92, 387,371,385.84 and 155,272,238 is: 214,261,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,722,741.92 : 387,371,385.84 = 155,272,238 : x
  2. Step 2: Convert to fraction form
    280,722,741.92/387,371,385.84 = 155,272,238/x
  3. Step 3: Cross multiply
    280,722,741.92x = 387,371,385.84 × 155,272,238
  4. Step 4: Simplify right side
    280,722,741.92x = 60,148,022,016,538,304
  5. Step 5: Solve for x
    x = 60,148,022,016,538,304/280,722,741.92
  6. Step 6: Final answer
    x = 214,261,308.53

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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.