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Finding the Fourth Proportional to 220,545.60, 330,818.40 and 127,233.60

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Solution

The fourth proportional to 220,545.60, 330,818.40 and 127,233.60 is: 190,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,545.60 : 330,818.40 = 127,233.60 : x
  2. Step 2: Convert to fraction form
    220,545.60/330,818.40 = 127,233.60/x
  3. Step 3: Cross multiply
    220,545.60x = 330,818.40 × 127,233.60
  4. Step 4: Simplify right side
    220,545.60x = 42,091,215,978.24
  5. Step 5: Solve for x
    x = 42,091,215,978.24/220,545.60
  6. Step 6: Final answer
    x = 190,850.40

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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.