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Finding the Fourth Proportional to 438,663.84, 605,342.88 and 247,665.92

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Solution

The fourth proportional to 438,663.84, 605,342.88 and 247,665.92 is: 341,771.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,663.84 : 605,342.88 = 247,665.92 : x
  2. Step 2: Convert to fraction form
    438,663.84/605,342.88 = 247,665.92/x
  3. Step 3: Cross multiply
    438,663.84x = 605,342.88 × 247,665.92
  4. Step 4: Simplify right side
    438,663.84x = 149,922,801,290.65
  5. Step 5: Solve for x
    x = 149,922,801,290.65/438,663.84
  6. Step 6: Final answer
    x = 341,771.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.