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Finding the Fourth Proportional to 252,602.40, 378,922.20 and 72,680.52

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Solution

The fourth proportional to 252,602.40, 378,922.20 and 72,680.52 is: 109,026.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,602.40 : 378,922.20 = 72,680.52 : x
  2. Step 2: Convert to fraction form
    252,602.40/378,922.20 = 72,680.52/x
  3. Step 3: Cross multiply
    252,602.40x = 378,922.20 × 72,680.52
  4. Step 4: Simplify right side
    252,602.40x = 27,540,262,535.54
  5. Step 5: Solve for x
    x = 27,540,262,535.54/252,602.40
  6. Step 6: Final answer
    x = 109,026.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.