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Finding the Fourth Proportional to 418,384.62, 577,375.29 and 227,398.05

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Solution

The fourth proportional to 418,384.62, 577,375.29 and 227,398.05 is: 313,811.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,384.62 : 577,375.29 = 227,398.05 : x
  2. Step 2: Convert to fraction form
    418,384.62/577,375.29 = 227,398.05/x
  3. Step 3: Cross multiply
    418,384.62x = 577,375.29 × 227,398.05
  4. Step 4: Simplify right side
    418,384.62x = 131,294,015,064.19
  5. Step 5: Solve for x
    x = 131,294,015,064.19/418,384.62
  6. Step 6: Final answer
    x = 313,811.76

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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.