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Finding the Fourth Proportional to 478,326.75, 717,522.93 and 158,478

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Solution

The fourth proportional to 478,326.75, 717,522.93 and 158,478 is: 237,727.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,326.75 : 717,522.93 = 158,478 : x
  2. Step 2: Convert to fraction form
    478,326.75/717,522.93 = 158,478/x
  3. Step 3: Cross multiply
    478,326.75x = 717,522.93 × 158,478
  4. Step 4: Simplify right side
    478,326.75x = 113,711,598,900.54
  5. Step 5: Solve for x
    x = 113,711,598,900.54/478,326.75
  6. Step 6: Final answer
    x = 237,727.87

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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.