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Finding the Fourth Proportional to 372,759.27, 514,429.41 and 280,713.77

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Solution

The fourth proportional to 372,759.27, 514,429.41 and 280,713.77 is: 387,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,759.27 : 514,429.41 = 280,713.77 : x
  2. Step 2: Convert to fraction form
    372,759.27/514,429.41 = 280,713.77/x
  3. Step 3: Cross multiply
    372,759.27x = 514,429.41 × 280,713.77
  4. Step 4: Simplify right side
    372,759.27x = 144,407,416,507.83
  5. Step 5: Solve for x
    x = 144,407,416,507.83/372,759.27
  6. Step 6: Final answer
    x = 387,401.28

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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.