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Finding the Fourth Proportional to 418,387.53, 577,376.87 and 227,404.65

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Solution

The fourth proportional to 418,387.53, 577,376.87 and 227,404.65 is: 313,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,387.53 : 577,376.87 = 227,404.65 : x
  2. Step 2: Convert to fraction form
    418,387.53/577,376.87 = 227,404.65/x
  3. Step 3: Cross multiply
    418,387.53x = 577,376.87 × 227,404.65
  4. Step 4: Simplify right side
    418,387.53x = 131,298,183,903.42
  5. Step 5: Solve for x
    x = 131,298,183,903.42/418,387.53
  6. Step 6: Final answer
    x = 313,819.54

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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.