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Finding the Fourth Proportional to 447,001.75, 670,502.62 and 131,458.66

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Solution

The fourth proportional to 447,001.75, 670,502.62 and 131,458.66 is: 197,187.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,001.75 : 670,502.62 = 131,458.66 : x
  2. Step 2: Convert to fraction form
    447,001.75/670,502.62 = 131,458.66/x
  3. Step 3: Cross multiply
    447,001.75x = 670,502.62 × 131,458.66
  4. Step 4: Simplify right side
    447,001.75x = 88,143,375,567.52
  5. Step 5: Solve for x
    x = 88,143,375,567.52/447,001.75
  6. Step 6: Final answer
    x = 197,187.99

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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.