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Finding the Fourth Proportional to 218,438.92, 301,363.40 and 127,765.90

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Solution

The fourth proportional to 218,438.92, 301,363.40 and 127,765.90 is: 176,268.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,438.92 : 301,363.40 = 127,765.90 : x
  2. Step 2: Convert to fraction form
    218,438.92/301,363.40 = 127,765.90/x
  3. Step 3: Cross multiply
    218,438.92x = 301,363.40 × 127,765.90
  4. Step 4: Simplify right side
    218,438.92x = 38,503,966,028.06
  5. Step 5: Solve for x
    x = 38,503,966,028.06/218,438.92
  6. Step 6: Final answer
    x = 176,268.80

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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.