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Finding the Fourth Proportional to 219,306.07, 328,891.06 and 79,046.47

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Solution

The fourth proportional to 219,306.07, 328,891.06 and 79,046.47 is: 118,545.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,306.07 : 328,891.06 = 79,046.47 : x
  2. Step 2: Convert to fraction form
    219,306.07/328,891.06 = 79,046.47/x
  3. Step 3: Cross multiply
    219,306.07x = 328,891.06 × 79,046.47
  4. Step 4: Simplify right side
    219,306.07x = 25,997,677,307.56
  5. Step 5: Solve for x
    x = 25,997,677,307.56/219,306.07
  6. Step 6: Final answer
    x = 118,545.18

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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.