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Finding the Fourth Proportional to 268,341.60, 402,512.40 and 81,353.04

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Solution

The fourth proportional to 268,341.60, 402,512.40 and 81,353.04 is: 122,029.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,341.60 : 402,512.40 = 81,353.04 : x
  2. Step 2: Convert to fraction form
    268,341.60/402,512.40 = 81,353.04/x
  3. Step 3: Cross multiply
    268,341.60x = 402,512.40 × 81,353.04
  4. Step 4: Simplify right side
    268,341.60x = 32,745,607,377.70
  5. Step 5: Solve for x
    x = 32,745,607,377.70/268,341.60
  6. Step 6: Final answer
    x = 122,029.56

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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.