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Finding the Fourth Proportional to 420,600.91, 580,426.30 and 229,614.30

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Solution

The fourth proportional to 420,600.91, 580,426.30 and 229,614.30 is: 316,866.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,600.91 : 580,426.30 = 229,614.30 : x
  2. Step 2: Convert to fraction form
    420,600.91/580,426.30 = 229,614.30/x
  3. Step 3: Cross multiply
    420,600.91x = 580,426.30 × 229,614.30
  4. Step 4: Simplify right side
    420,600.91x = 133,274,175,825.46
  5. Step 5: Solve for x
    x = 133,274,175,825.46/420,600.91
  6. Step 6: Final answer
    x = 316,866.12

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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.