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Finding the Fourth Proportional to 217,875.01, 300,620.87 and 127,189.82

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Solution

The fourth proportional to 217,875.01, 300,620.87 and 127,189.82 is: 175,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,875.01 : 300,620.87 = 127,189.82 : x
  2. Step 2: Convert to fraction form
    217,875.01/300,620.87 = 127,189.82/x
  3. Step 3: Cross multiply
    217,875.01x = 300,620.87 × 127,189.82
  4. Step 4: Simplify right side
    217,875.01x = 38,235,914,343.54
  5. Step 5: Solve for x
    x = 38,235,914,343.54/217,875.01
  6. Step 6: Final answer
    x = 175,494.72

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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.