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Finding the Fourth Proportional to 250,315.39, 375,496.14 and 81,836.61

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Solution

The fourth proportional to 250,315.39, 375,496.14 and 81,836.61 is: 122,762.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,315.39 : 375,496.14 = 81,836.61 : x
  2. Step 2: Convert to fraction form
    250,315.39/375,496.14 = 81,836.61/x
  3. Step 3: Cross multiply
    250,315.39x = 375,496.14 × 81,836.61
  4. Step 4: Simplify right side
    250,315.39x = 30,729,331,165.69
  5. Step 5: Solve for x
    x = 30,729,331,165.69/250,315.39
  6. Step 6: Final answer
    x = 122,762.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.