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Finding the Fourth Proportional to 225,331.25, 310,957.11 and 123,356.40

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Solution

The fourth proportional to 225,331.25, 310,957.11 and 123,356.40 is: 170,231.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,331.25 : 310,957.11 = 123,356.40 : x
  2. Step 2: Convert to fraction form
    225,331.25/310,957.11 = 123,356.40/x
  3. Step 3: Cross multiply
    225,331.25x = 310,957.11 × 123,356.40
  4. Step 4: Simplify right side
    225,331.25x = 38,358,548,404.02
  5. Step 5: Solve for x
    x = 38,358,548,404.02/225,331.25
  6. Step 6: Final answer
    x = 170,231.82

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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.