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Finding the Fourth Proportional to 250,718.74, 345,989.81 and 135,997.10

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Solution

The fourth proportional to 250,718.74, 345,989.81 and 135,997.10 is: 187,674.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,718.74 : 345,989.81 = 135,997.10 : x
  2. Step 2: Convert to fraction form
    250,718.74/345,989.81 = 135,997.10/x
  3. Step 3: Cross multiply
    250,718.74x = 345,989.81 × 135,997.10
  4. Step 4: Simplify right side
    250,718.74x = 47,053,610,789.55
  5. Step 5: Solve for x
    x = 47,053,610,789.55/250,718.74
  6. Step 6: Final answer
    x = 187,674.89

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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.