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Finding the Fourth Proportional to 372,757.26, 514,426.64 and 280,711.77

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Solution

The fourth proportional to 372,757.26, 514,426.64 and 280,711.77 is: 387,398.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,757.26 : 514,426.64 = 280,711.77 : x
  2. Step 2: Convert to fraction form
    372,757.26/514,426.64 = 280,711.77/x
  3. Step 3: Cross multiply
    372,757.26x = 514,426.64 × 280,711.77
  4. Step 4: Simplify right side
    372,757.26x = 144,405,612,649.55
  5. Step 5: Solve for x
    x = 144,405,612,649.55/372,757.26
  6. Step 6: Final answer
    x = 387,398.52

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1.5x scale

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.