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Finding the Fourth Proportional to 219,711.18, 329,566.77 and 79,437

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Solution

The fourth proportional to 219,711.18, 329,566.77 and 79,437 is: 119,155.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,711.18 : 329,566.77 = 79,437 : x
  2. Step 2: Convert to fraction form
    219,711.18/329,566.77 = 79,437/x
  3. Step 3: Cross multiply
    219,711.18x = 329,566.77 × 79,437
  4. Step 4: Simplify right side
    219,711.18x = 26,179,795,508.49
  5. Step 5: Solve for x
    x = 26,179,795,508.49/219,711.18
  6. Step 6: Final answer
    x = 119,155.50

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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.