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Finding the Fourth Proportional to 219,708.40, 329,708.40 and 124,938.40

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Solution

The fourth proportional to 219,708.40, 329,708.40 and 124,938.40 is: 187,490.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,708.40 : 329,708.40 = 124,938.40 : x
  2. Step 2: Convert to fraction form
    219,708.40/329,708.40 = 124,938.40/x
  3. Step 3: Cross multiply
    219,708.40x = 329,708.40 × 124,938.40
  4. Step 4: Simplify right side
    219,708.40x = 41,193,239,962.56
  5. Step 5: Solve for x
    x = 41,193,239,962.56/219,708.40
  6. Step 6: Final answer
    x = 187,490.51

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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.