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Finding the Fourth Proportional to 219,938.33, 329,901.72 and 70,187.75

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Solution

The fourth proportional to 219,938.33, 329,901.72 and 70,187.75 is: 105,279.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,938.33 : 329,901.72 = 70,187.75 : x
  2. Step 2: Convert to fraction form
    219,938.33/329,901.72 = 70,187.75/x
  3. Step 3: Cross multiply
    219,938.33x = 329,901.72 × 70,187.75
  4. Step 4: Simplify right side
    219,938.33x = 23,155,059,447.93
  5. Step 5: Solve for x
    x = 23,155,059,447.93/219,938.33
  6. Step 6: Final answer
    x = 105,279.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.