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Finding the Fourth Proportional to 478,766.70, 718,092.45 and 198,254.70

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Solution

The fourth proportional to 478,766.70, 718,092.45 and 198,254.70 is: 297,358.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,766.70 : 718,092.45 = 198,254.70 : x
  2. Step 2: Convert to fraction form
    478,766.70/718,092.45 = 198,254.70/x
  3. Step 3: Cross multiply
    478,766.70x = 718,092.45 × 198,254.70
  4. Step 4: Simplify right side
    478,766.70x = 142,365,203,247.02
  5. Step 5: Solve for x
    x = 142,365,203,247.02/478,766.70
  6. Step 6: Final answer
    x = 297,358.20

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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.