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Finding the Fourth Proportional to 239,468.54, 330,514.47 and 137,563.90

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Solution

The fourth proportional to 239,468.54, 330,514.47 and 137,563.90 is: 189,865.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,468.54 : 330,514.47 = 137,563.90 : x
  2. Step 2: Convert to fraction form
    239,468.54/330,514.47 = 137,563.90/x
  3. Step 3: Cross multiply
    239,468.54x = 330,514.47 × 137,563.90
  4. Step 4: Simplify right side
    239,468.54x = 45,466,859,499.63
  5. Step 5: Solve for x
    x = 45,466,859,499.63/239,468.54
  6. Step 6: Final answer
    x = 189,865.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.