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Finding the Fourth Proportional to 205,342.40, 308,186.40 and 100,251.20

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Solution

The fourth proportional to 205,342.40, 308,186.40 and 100,251.20 is: 150,461.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,342.40 : 308,186.40 = 100,251.20 : x
  2. Step 2: Convert to fraction form
    205,342.40/308,186.40 = 100,251.20/x
  3. Step 3: Cross multiply
    205,342.40x = 308,186.40 × 100,251.20
  4. Step 4: Simplify right side
    205,342.40x = 30,896,056,423.68
  5. Step 5: Solve for x
    x = 30,896,056,423.68/205,342.40
  6. Step 6: Final answer
    x = 150,461.16

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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.