Home / 220,966.60-331,449.90-136,985.80

Finding the Fourth Proportional to 220,966.60, 331,449.90 and 136,985.80

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Solution

The fourth proportional to 220,966.60, 331,449.90 and 136,985.80 is: 205,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,966.60 : 331,449.90 = 136,985.80 : x
  2. Step 2: Convert to fraction form
    220,966.60/331,449.90 = 136,985.80/x
  3. Step 3: Cross multiply
    220,966.60x = 331,449.90 × 136,985.80
  4. Step 4: Simplify right side
    220,966.60x = 45,403,929,711.42
  5. Step 5: Solve for x
    x = 45,403,929,711.42/220,966.60
  6. Step 6: Final answer
    x = 205,478.70

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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.