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Finding the Fourth Proportional to 418,505.76, 577,544.52 and 227,519.88

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Solution

The fourth proportional to 418,505.76, 577,544.52 and 227,519.88 is: 313,981.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,505.76 : 577,544.52 = 227,519.88 : x
  2. Step 2: Convert to fraction form
    418,505.76/577,544.52 = 227,519.88/x
  3. Step 3: Cross multiply
    418,505.76x = 577,544.52 × 227,519.88
  4. Step 4: Simplify right side
    418,505.76x = 131,402,859,885.06
  5. Step 5: Solve for x
    x = 131,402,859,885.06/418,505.76
  6. Step 6: Final answer
    x = 313,981.01

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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.