Home / 220,981.60-331,472.40-137,000.80

Finding the Fourth Proportional to 220,981.60, 331,472.40 and 137,000.80

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Solution

The fourth proportional to 220,981.60, 331,472.40 and 137,000.80 is: 205,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,981.60 : 331,472.40 = 137,000.80 : x
  2. Step 2: Convert to fraction form
    220,981.60/331,472.40 = 137,000.80/x
  3. Step 3: Cross multiply
    220,981.60x = 331,472.40 × 137,000.80
  4. Step 4: Simplify right side
    220,981.60x = 45,411,983,977.92
  5. Step 5: Solve for x
    x = 45,411,983,977.92/220,981.60
  6. Step 6: Final answer
    x = 205,501.20

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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.