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Finding the Fourth Proportional to 220,764.28, 304,646.25 and 125,265.28

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Solution

The fourth proportional to 220,764.28, 304,646.25 and 125,265.28 is: 172,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,764.28 : 304,646.25 = 125,265.28 : x
  2. Step 2: Convert to fraction form
    220,764.28/304,646.25 = 125,265.28/x
  3. Step 3: Cross multiply
    220,764.28x = 304,646.25 × 125,265.28
  4. Step 4: Simplify right side
    220,764.28x = 38,161,597,807.20
  5. Step 5: Solve for x
    x = 38,161,597,807.20/220,764.28
  6. Step 6: Final answer
    x = 172,861.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.