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Finding the Fourth Proportional to 217,874.01, 300,619.50 and 127,188.82

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Solution

The fourth proportional to 217,874.01, 300,619.50 and 127,188.82 is: 175,493.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,874.01 : 300,619.50 = 127,188.82 : x
  2. Step 2: Convert to fraction form
    217,874.01/300,619.50 = 127,188.82/x
  3. Step 3: Cross multiply
    217,874.01x = 300,619.50 × 127,188.82
  4. Step 4: Simplify right side
    217,874.01x = 38,235,437,334.95
  5. Step 5: Solve for x
    x = 38,235,437,334.95/217,874.01
  6. Step 6: Final answer
    x = 175,493.34

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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.