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Finding the Fourth Proportional to 220,557.66, 304,438.95 and 125,127.78

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Solution

The fourth proportional to 220,557.66, 304,438.95 and 125,127.78 is: 172,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,557.66 : 304,438.95 = 125,127.78 : x
  2. Step 2: Convert to fraction form
    220,557.66/304,438.95 = 125,127.78/x
  3. Step 3: Cross multiply
    220,557.66x = 304,438.95 × 125,127.78
  4. Step 4: Simplify right side
    220,557.66x = 38,093,769,959.03
  5. Step 5: Solve for x
    x = 38,093,769,959.03/220,557.66
  6. Step 6: Final answer
    x = 172,715.70

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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.