Home / 420,456.42-580,225.68-229,468.14

Finding the Fourth Proportional to 420,456.42, 580,225.68 and 229,468.14

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Solution

The fourth proportional to 420,456.42, 580,225.68 and 229,468.14 is: 316,663.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,456.42 : 580,225.68 = 229,468.14 : x
  2. Step 2: Convert to fraction form
    420,456.42/580,225.68 = 229,468.14/x
  3. Step 3: Cross multiply
    420,456.42x = 580,225.68 × 229,468.14
  4. Step 4: Simplify right side
    420,456.42x = 133,143,307,569.84
  5. Step 5: Solve for x
    x = 133,143,307,569.84/420,456.42
  6. Step 6: Final answer
    x = 316,663.75

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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.