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Finding the Fourth Proportional to 225,319.92, 310,936.68 and 123,342.72

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Solution

The fourth proportional to 225,319.92, 310,936.68 and 123,342.72 is: 170,210.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,319.92 : 310,936.68 = 123,342.72 : x
  2. Step 2: Convert to fraction form
    225,319.92/310,936.68 = 123,342.72/x
  3. Step 3: Cross multiply
    225,319.92x = 310,936.68 × 123,342.72
  4. Step 4: Simplify right side
    225,319.92x = 38,351,775,858.97
  5. Step 5: Solve for x
    x = 38,351,775,858.97/225,319.92
  6. Step 6: Final answer
    x = 170,210.32

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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.