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Finding the Fourth Proportional to 219,718.40, 329,723.40 and 124,948.40

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Solution

The fourth proportional to 219,718.40, 329,723.40 and 124,948.40 is: 187,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,718.40 : 329,723.40 = 124,948.40 : x
  2. Step 2: Convert to fraction form
    219,718.40/329,723.40 = 124,948.40/x
  3. Step 3: Cross multiply
    219,718.40x = 329,723.40 × 124,948.40
  4. Step 4: Simplify right side
    219,718.40x = 41,198,411,272.56
  5. Step 5: Solve for x
    x = 41,198,411,272.56/219,718.40
  6. Step 6: Final answer
    x = 187,505.51

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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.