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Finding the Fourth Proportional to 478,449.90, 717,772.05 and 162,938.70

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Solution

The fourth proportional to 478,449.90, 717,772.05 and 162,938.70 is: 244,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,449.90 : 717,772.05 = 162,938.70 : x
  2. Step 2: Convert to fraction form
    478,449.90/717,772.05 = 162,938.70/x
  3. Step 3: Cross multiply
    478,449.90x = 717,772.05 × 162,938.70
  4. Step 4: Simplify right side
    478,449.90x = 116,952,844,723.34
  5. Step 5: Solve for x
    x = 116,952,844,723.34/478,449.90
  6. Step 6: Final answer
    x = 244,441.15

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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.