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Finding the Fourth Proportional to 250,514.94, 345,709.89 and 137,337.78

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Solution

The fourth proportional to 250,514.94, 345,709.89 and 137,337.78 is: 189,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,514.94 : 345,709.89 = 137,337.78 : x
  2. Step 2: Convert to fraction form
    250,514.94/345,709.89 = 137,337.78/x
  3. Step 3: Cross multiply
    250,514.94x = 345,709.89 × 137,337.78
  4. Step 4: Simplify right side
    250,514.94x = 47,479,028,816.64
  5. Step 5: Solve for x
    x = 47,479,028,816.64/250,514.94
  6. Step 6: Final answer
    x = 189,525.74

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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.