Home / 280,580,084.55-387,214,012.22-155,129,959.17

Finding the Fourth Proportional to 280,580,084.55, 387,214,012.22 and 155,129,959.17

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Solution

The fourth proportional to 280,580,084.55, 387,214,012.22 and 155,129,959.17 is: 214,086,805.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,580,084.55 : 387,214,012.22 = 155,129,959.17 : x
  2. Step 2: Convert to fraction form
    280,580,084.55/387,214,012.22 = 155,129,959.17/x
  3. Step 3: Cross multiply
    280,580,084.55x = 387,214,012.22 × 155,129,959.17
  4. Step 4: Simplify right side
    280,580,084.55x = 60,068,493,905,740,480
  5. Step 5: Solve for x
    x = 60,068,493,905,740,480/280,580,084.55
  6. Step 6: Final answer
    x = 214,086,805.21

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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.