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Finding the Fourth Proportional to 438,768.75, 658,153.13 and 106,344.75

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Solution

The fourth proportional to 438,768.75, 658,153.13 and 106,344.75 is: 159,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,768.75 : 658,153.13 = 106,344.75 : x
  2. Step 2: Convert to fraction form
    438,768.75/658,153.13 = 106,344.75/x
  3. Step 3: Cross multiply
    438,768.75x = 658,153.13 × 106,344.75
  4. Step 4: Simplify right side
    438,768.75x = 69,991,130,071.57
  5. Step 5: Solve for x
    x = 69,991,130,071.57/438,768.75
  6. Step 6: Final answer
    x = 159,517.13

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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.