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Finding the Fourth Proportional to 250,586.64, 345,874.32 and 155,036.88

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Solution

The fourth proportional to 250,586.64, 345,874.32 and 155,036.88 is: 213,990.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,586.64 : 345,874.32 = 155,036.88 : x
  2. Step 2: Convert to fraction form
    250,586.64/345,874.32 = 155,036.88/x
  3. Step 3: Cross multiply
    250,586.64x = 345,874.32 × 155,036.88
  4. Step 4: Simplify right side
    250,586.64x = 53,623,275,444.92
  5. Step 5: Solve for x
    x = 53,623,275,444.92/250,586.64
  6. Step 6: Final answer
    x = 213,990.96

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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.