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Finding the Fourth Proportional to 225,280.89, 310,874.13 and 123,286.05

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Solution

The fourth proportional to 225,280.89, 310,874.13 and 123,286.05 is: 170,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,280.89 : 310,874.13 = 123,286.05 : x
  2. Step 2: Convert to fraction form
    225,280.89/310,874.13 = 123,286.05/x
  3. Step 3: Cross multiply
    225,280.89x = 310,874.13 × 123,286.05
  4. Step 4: Simplify right side
    225,280.89x = 38,326,443,534.89
  5. Step 5: Solve for x
    x = 38,326,443,534.89/225,280.89
  6. Step 6: Final answer
    x = 170,127.36

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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.