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Finding the Fourth Proportional to 269,531.50, 404,316.70 and 103,319.50

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Solution

The fourth proportional to 269,531.50, 404,316.70 and 103,319.50 is: 154,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,531.50 : 404,316.70 = 103,319.50 : x
  2. Step 2: Convert to fraction form
    269,531.50/404,316.70 = 103,319.50/x
  3. Step 3: Cross multiply
    269,531.50x = 404,316.70 × 103,319.50
  4. Step 4: Simplify right side
    269,531.50x = 41,773,799,285.65
  5. Step 5: Solve for x
    x = 41,773,799,285.65/269,531.50
  6. Step 6: Final answer
    x = 154,986.71

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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.