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Finding the Fourth Proportional to 418,473.30, 577,486.34 and 227,491.50

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Solution

The fourth proportional to 418,473.30, 577,486.34 and 227,491.50 is: 313,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,473.30 : 577,486.34 = 227,491.50 : x
  2. Step 2: Convert to fraction form
    418,473.30/577,486.34 = 227,491.50/x
  3. Step 3: Cross multiply
    418,473.30x = 577,486.34 × 227,491.50
  4. Step 4: Simplify right side
    418,473.30x = 131,373,233,716.11
  5. Step 5: Solve for x
    x = 131,373,233,716.11/418,473.30
  6. Step 6: Final answer
    x = 313,934.57

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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.