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Finding the Fourth Proportional to 250,354.72, 345,490.86 and 137,181.52

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Solution

The fourth proportional to 250,354.72, 345,490.86 and 137,181.52 is: 189,311.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,354.72 : 345,490.86 = 137,181.52 : x
  2. Step 2: Convert to fraction form
    250,354.72/345,490.86 = 137,181.52/x
  3. Step 3: Cross multiply
    250,354.72x = 345,490.86 × 137,181.52
  4. Step 4: Simplify right side
    250,354.72x = 47,394,961,320.91
  5. Step 5: Solve for x
    x = 47,394,961,320.91/250,354.72
  6. Step 6: Final answer
    x = 189,311.24

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1.5x scale

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.