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Finding the Fourth Proportional to 250,210.80, 375,321.06 and 81,731.61

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Solution

The fourth proportional to 250,210.80, 375,321.06 and 81,731.61 is: 122,599.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,210.80 : 375,321.06 = 81,731.61 : x
  2. Step 2: Convert to fraction form
    250,210.80/375,321.06 = 81,731.61/x
  3. Step 3: Cross multiply
    250,210.80x = 375,321.06 × 81,731.61
  4. Step 4: Simplify right side
    250,210.80x = 30,675,594,500.71
  5. Step 5: Solve for x
    x = 30,675,594,500.71/250,210.80
  6. Step 6: Final answer
    x = 122,599.00

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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.