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Finding the Fourth Proportional to 219,958.10, 329,718.45 and 101,422.70

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Solution

The fourth proportional to 219,958.10, 329,718.45 and 101,422.70 is: 152,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,958.10 : 329,718.45 = 101,422.70 : x
  2. Step 2: Convert to fraction form
    219,958.10/329,718.45 = 101,422.70/x
  3. Step 3: Cross multiply
    219,958.10x = 329,718.45 × 101,422.70
  4. Step 4: Simplify right side
    219,958.10x = 33,440,935,438.82
  5. Step 5: Solve for x
    x = 33,440,935,438.82/219,958.10
  6. Step 6: Final answer
    x = 152,033.21

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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.