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Finding the Fourth Proportional to 363,321.34, 545,019.17 and 138,870.70

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Solution

The fourth proportional to 363,321.34, 545,019.17 and 138,870.70 is: 208,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,321.34 : 545,019.17 = 138,870.70 : x
  2. Step 2: Convert to fraction form
    363,321.34/545,019.17 = 138,870.70/x
  3. Step 3: Cross multiply
    363,321.34x = 545,019.17 × 138,870.70
  4. Step 4: Simplify right side
    363,321.34x = 75,687,193,651.32
  5. Step 5: Solve for x
    x = 75,687,193,651.32/363,321.34
  6. Step 6: Final answer
    x = 208,320.25

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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.