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Finding the Fourth Proportional to 220,217.52, 303,905.80 and 124,722.80

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Solution

The fourth proportional to 220,217.52, 303,905.80 and 124,722.80 is: 172,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,217.52 : 303,905.80 = 124,722.80 : x
  2. Step 2: Convert to fraction form
    220,217.52/303,905.80 = 124,722.80/x
  3. Step 3: Cross multiply
    220,217.52x = 303,905.80 × 124,722.80
  4. Step 4: Simplify right side
    220,217.52x = 37,903,982,312.24
  5. Step 5: Solve for x
    x = 37,903,982,312.24/220,217.52
  6. Step 6: Final answer
    x = 172,120.65

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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.