Home / 272,543.18-408,783.56-72,879.12

Finding the Fourth Proportional to 272,543.18, 408,783.56 and 72,879.12

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Solution

The fourth proportional to 272,543.18, 408,783.56 and 72,879.12 is: 109,310.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,543.18 : 408,783.56 = 72,879.12 : x
  2. Step 2: Convert to fraction form
    272,543.18/408,783.56 = 72,879.12/x
  3. Step 3: Cross multiply
    272,543.18x = 408,783.56 × 72,879.12
  4. Step 4: Simplify right side
    272,543.18x = 29,791,786,123.27
  5. Step 5: Solve for x
    x = 29,791,786,123.27/272,543.18
  6. Step 6: Final answer
    x = 109,310.33

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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.