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Finding the Fourth Proportional to 272,605.92, 408,905.22 and 70,200.90

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Solution

The fourth proportional to 272,605.92, 408,905.22 and 70,200.90 is: 105,300.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,605.92 : 408,905.22 = 70,200.90 : x
  2. Step 2: Convert to fraction form
    272,605.92/408,905.22 = 70,200.90/x
  3. Step 3: Cross multiply
    272,605.92x = 408,905.22 × 70,200.90
  4. Step 4: Simplify right side
    272,605.92x = 28,705,514,458.70
  5. Step 5: Solve for x
    x = 28,705,514,458.70/272,605.92
  6. Step 6: Final answer
    x = 105,300.41

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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.