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Finding the Fourth Proportional to 438,598.28, 605,265.78 and 247,623.97

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Solution

The fourth proportional to 438,598.28, 605,265.78 and 247,623.97 is: 341,721.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,598.28 : 605,265.78 = 247,623.97 : x
  2. Step 2: Convert to fraction form
    438,598.28/605,265.78 = 247,623.97/x
  3. Step 3: Cross multiply
    438,598.28x = 605,265.78 × 247,623.97
  4. Step 4: Simplify right side
    438,598.28x = 149,878,315,348.75
  5. Step 5: Solve for x
    x = 149,878,315,348.75/438,598.28
  6. Step 6: Final answer
    x = 341,721.17

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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.