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Finding the Fourth Proportional to 479,487.60, 718,972.20 and 199,033.20

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Solution

The fourth proportional to 479,487.60, 718,972.20 and 199,033.20 is: 298,442.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,487.60 : 718,972.20 = 199,033.20 : x
  2. Step 2: Convert to fraction form
    479,487.60/718,972.20 = 199,033.20/x
  3. Step 3: Cross multiply
    479,487.60x = 718,972.20 × 199,033.20
  4. Step 4: Simplify right side
    479,487.60x = 143,099,337,677.04
  5. Step 5: Solve for x
    x = 143,099,337,677.04/479,487.60
  6. Step 6: Final answer
    x = 298,442.21

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1.5x scale

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.