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Finding the Fourth Proportional to 392,585.28, 541,767.80 and 220,503.51

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Solution

The fourth proportional to 392,585.28, 541,767.80 and 220,503.51 is: 304,294.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,585.28 : 541,767.80 = 220,503.51 : x
  2. Step 2: Convert to fraction form
    392,585.28/541,767.80 = 220,503.51/x
  3. Step 3: Cross multiply
    392,585.28x = 541,767.80 × 220,503.51
  4. Step 4: Simplify right side
    392,585.28x = 119,461,700,402.46
  5. Step 5: Solve for x
    x = 119,461,700,402.46/392,585.28
  6. Step 6: Final answer
    x = 304,294.90

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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.