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Finding the Fourth Proportional to 298,769.38, 448,152.55 and 172,327.70

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Solution

The fourth proportional to 298,769.38, 448,152.55 and 172,327.70 is: 258,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,769.38 : 448,152.55 = 172,327.70 : x
  2. Step 2: Convert to fraction form
    298,769.38/448,152.55 = 172,327.70/x
  3. Step 3: Cross multiply
    298,769.38x = 448,152.55 × 172,327.70
  4. Step 4: Simplify right side
    298,769.38x = 77,229,098,880.20
  5. Step 5: Solve for x
    x = 77,229,098,880.20/298,769.38
  6. Step 6: Final answer
    x = 258,490.68

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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.