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Finding the Fourth Proportional to 220,443.43, 304,235.72 and 124,939.87

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Solution

The fourth proportional to 220,443.43, 304,235.72 and 124,939.87 is: 172,430.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,443.43 : 304,235.72 = 124,939.87 : x
  2. Step 2: Convert to fraction form
    220,443.43/304,235.72 = 124,939.87/x
  3. Step 3: Cross multiply
    220,443.43x = 304,235.72 × 124,939.87
  4. Step 4: Simplify right side
    220,443.43x = 38,011,169,160.28
  5. Step 5: Solve for x
    x = 38,011,169,160.28/220,443.43
  6. Step 6: Final answer
    x = 172,430.50

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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.