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Finding the Fourth Proportional to 219,279.65, 329,034.74 and 155,648.43

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Solution

The fourth proportional to 219,279.65, 329,034.74 and 155,648.43 is: 233,554.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,279.65 : 329,034.74 = 155,648.43 : x
  2. Step 2: Convert to fraction form
    219,279.65/329,034.74 = 155,648.43/x
  3. Step 3: Cross multiply
    219,279.65x = 329,034.74 × 155,648.43
  4. Step 4: Simplify right side
    219,279.65x = 51,213,740,696.46
  5. Step 5: Solve for x
    x = 51,213,740,696.46/219,279.65
  6. Step 6: Final answer
    x = 233,554.46

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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.