Home / 215,981.40-323,972.10-137,152.20

Finding the Fourth Proportional to 215,981.40, 323,972.10 and 137,152.20

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Solution

The fourth proportional to 215,981.40, 323,972.10 and 137,152.20 is: 205,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,981.40 : 323,972.10 = 137,152.20 : x
  2. Step 2: Convert to fraction form
    215,981.40/323,972.10 = 137,152.20/x
  3. Step 3: Cross multiply
    215,981.40x = 323,972.10 × 137,152.20
  4. Step 4: Simplify right side
    215,981.40x = 44,433,486,253.62
  5. Step 5: Solve for x
    x = 44,433,486,253.62/215,981.40
  6. Step 6: Final answer
    x = 205,728.30

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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.