Home / 262,231.20-393,346.80-72,691.20

Finding the Fourth Proportional to 262,231.20, 393,346.80 and 72,691.20

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Solution

The fourth proportional to 262,231.20, 393,346.80 and 72,691.20 is: 109,036.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,231.20 : 393,346.80 = 72,691.20 : x
  2. Step 2: Convert to fraction form
    262,231.20/393,346.80 = 72,691.20/x
  3. Step 3: Cross multiply
    262,231.20x = 393,346.80 × 72,691.20
  4. Step 4: Simplify right side
    262,231.20x = 28,592,850,908.16
  5. Step 5: Solve for x
    x = 28,592,850,908.16/262,231.20
  6. Step 6: Final answer
    x = 109,036.80

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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.