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Finding the Fourth Proportional to 447,505.15, 671,191.06 and 147,987.30

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Solution

The fourth proportional to 447,505.15, 671,191.06 and 147,987.30 is: 221,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,505.15 : 671,191.06 = 147,987.30 : x
  2. Step 2: Convert to fraction form
    447,505.15/671,191.06 = 147,987.30/x
  3. Step 3: Cross multiply
    447,505.15x = 671,191.06 × 147,987.30
  4. Step 4: Simplify right side
    447,505.15x = 99,327,752,753.54
  5. Step 5: Solve for x
    x = 99,327,752,753.54/447,505.15
  6. Step 6: Final answer
    x = 221,958.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.