Home / 272,623.92-408,952.20-85,635.42

Finding the Fourth Proportional to 272,623.92, 408,952.20 and 85,635.42

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Solution

The fourth proportional to 272,623.92, 408,952.20 and 85,635.42 is: 128,458.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,623.92 : 408,952.20 = 85,635.42 : x
  2. Step 2: Convert to fraction form
    272,623.92/408,952.20 = 85,635.42/x
  3. Step 3: Cross multiply
    272,623.92x = 408,952.20 × 85,635.42
  4. Step 4: Simplify right side
    272,623.92x = 35,020,793,406.92
  5. Step 5: Solve for x
    x = 35,020,793,406.92/272,623.92
  6. Step 6: Final answer
    x = 128,458.26

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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.