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Finding the Fourth Proportional to 225,091.35, 310,652.87 and 129,616.65

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Solution

The fourth proportional to 225,091.35, 310,652.87 and 129,616.65 is: 178,886.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,091.35 : 310,652.87 = 129,616.65 : x
  2. Step 2: Convert to fraction form
    225,091.35/310,652.87 = 129,616.65/x
  3. Step 3: Cross multiply
    225,091.35x = 310,652.87 × 129,616.65
  4. Step 4: Simplify right side
    225,091.35x = 40,265,783,674.20
  5. Step 5: Solve for x
    x = 40,265,783,674.20/225,091.35
  6. Step 6: Final answer
    x = 178,886.41

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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.