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Finding the Fourth Proportional to 420,363.52, 580,115.66 and 229,387.39

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Solution

The fourth proportional to 420,363.52, 580,115.66 and 229,387.39 is: 316,562.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,363.52 : 580,115.66 = 229,387.39 : x
  2. Step 2: Convert to fraction form
    420,363.52/580,115.66 = 229,387.39/x
  3. Step 3: Cross multiply
    420,363.52x = 580,115.66 × 229,387.39
  4. Step 4: Simplify right side
    420,363.52x = 133,071,213,958.22
  5. Step 5: Solve for x
    x = 133,071,213,958.22/420,363.52
  6. Step 6: Final answer
    x = 316,562.24

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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.