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Finding the Fourth Proportional to 420,610.92, 580,440.12 and 229,624.32

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Solution

The fourth proportional to 420,610.92, 580,440.12 and 229,624.32 is: 316,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,610.92 : 580,440.12 = 229,624.32 : x
  2. Step 2: Convert to fraction form
    420,610.92/580,440.12 = 229,624.32/x
  3. Step 3: Cross multiply
    420,610.92x = 580,440.12 × 229,624.32
  4. Step 4: Simplify right side
    420,610.92x = 133,283,167,855.72
  5. Step 5: Solve for x
    x = 133,283,167,855.72/420,610.92
  6. Step 6: Final answer
    x = 316,879.95

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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.