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Finding the Fourth Proportional to 245,086.20, 367,542.90 and 87,319.80

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Solution

The fourth proportional to 245,086.20, 367,542.90 and 87,319.80 is: 130,948.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,086.20 : 367,542.90 = 87,319.80 : x
  2. Step 2: Convert to fraction form
    245,086.20/367,542.90 = 87,319.80/x
  3. Step 3: Cross multiply
    245,086.20x = 367,542.90 × 87,319.80
  4. Step 4: Simplify right side
    245,086.20x = 32,093,772,519.42
  5. Step 5: Solve for x
    x = 32,093,772,519.42/245,086.20
  6. Step 6: Final answer
    x = 130,948.92

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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.