Home / 220,432.32-304,265.34-129,781.08

Finding the Fourth Proportional to 220,432.32, 304,265.34 and 129,781.08

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Solution

The fourth proportional to 220,432.32, 304,265.34 and 129,781.08 is: 179,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,432.32 : 304,265.34 = 129,781.08 : x
  2. Step 2: Convert to fraction form
    220,432.32/304,265.34 = 129,781.08/x
  3. Step 3: Cross multiply
    220,432.32x = 304,265.34 × 129,781.08
  4. Step 4: Simplify right side
    220,432.32x = 39,487,884,431.77
  5. Step 5: Solve for x
    x = 39,487,884,431.77/220,432.32
  6. Step 6: Final answer
    x = 179,138.36

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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.