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Finding the Fourth Proportional to 438,956.66, 605,809.32 and 247,982.34

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Solution

The fourth proportional to 438,956.66, 605,809.32 and 247,982.34 is: 342,243.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,956.66 : 605,809.32 = 247,982.34 : x
  2. Step 2: Convert to fraction form
    438,956.66/605,809.32 = 247,982.34/x
  3. Step 3: Cross multiply
    438,956.66x = 605,809.32 × 247,982.34
  4. Step 4: Simplify right side
    438,956.66x = 150,230,012,767.41
  5. Step 5: Solve for x
    x = 150,230,012,767.41/438,956.66
  6. Step 6: Final answer
    x = 342,243.38

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1.5x scale

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.