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Finding the Fourth Proportional to 418,489.32, 577,519.02 and 227,503.08

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Solution

The fourth proportional to 418,489.32, 577,519.02 and 227,503.08 is: 313,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,489.32 : 577,519.02 = 227,503.08 : x
  2. Step 2: Convert to fraction form
    418,489.32/577,519.02 = 227,503.08/x
  3. Step 3: Cross multiply
    418,489.32x = 577,519.02 × 227,503.08
  4. Step 4: Simplify right side
    418,489.32x = 131,387,355,808.58
  5. Step 5: Solve for x
    x = 131,387,355,808.58/418,489.32
  6. Step 6: Final answer
    x = 313,956.29

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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.