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Finding the Fourth Proportional to 208,648.61, 312,744.59 and 107,452.79

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Solution

The fourth proportional to 208,648.61, 312,744.59 and 107,452.79 is: 161,061.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,648.61 : 312,744.59 = 107,452.79 : x
  2. Step 2: Convert to fraction form
    208,648.61/312,744.59 = 107,452.79/x
  3. Step 3: Cross multiply
    208,648.61x = 312,744.59 × 107,452.79
  4. Step 4: Simplify right side
    208,648.61x = 33,605,277,054.87
  5. Step 5: Solve for x
    x = 33,605,277,054.87/208,648.61
  6. Step 6: Final answer
    x = 161,061.59

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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.