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Finding the Fourth Proportional to 438,955.88, 605,808.29 and 247,981.57

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Solution

The fourth proportional to 438,955.88, 605,808.29 and 247,981.57 is: 342,242.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,955.88 : 605,808.29 = 247,981.57 : x
  2. Step 2: Convert to fraction form
    438,955.88/605,808.29 = 247,981.57/x
  3. Step 3: Cross multiply
    438,955.88x = 605,808.29 × 247,981.57
  4. Step 4: Simplify right side
    438,955.88x = 150,229,286,604.27
  5. Step 5: Solve for x
    x = 150,229,286,604.27/438,955.88
  6. Step 6: Final answer
    x = 342,242.34

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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.