Home / 220,239.28-303,878.14-129,599.20

Finding the Fourth Proportional to 220,239.28, 303,878.14 and 129,599.20

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Solution

The fourth proportional to 220,239.28, 303,878.14 and 129,599.20 is: 178,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,239.28 : 303,878.14 = 129,599.20 : x
  2. Step 2: Convert to fraction form
    220,239.28/303,878.14 = 129,599.20/x
  3. Step 3: Cross multiply
    220,239.28x = 303,878.14 × 129,599.20
  4. Step 4: Simplify right side
    220,239.28x = 39,382,363,841.49
  5. Step 5: Solve for x
    x = 39,382,363,841.49/220,239.28
  6. Step 6: Final answer
    x = 178,816.26

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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.