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Finding the Fourth Proportional to 438,955.38, 605,807.60 and 247,981.07

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Solution

The fourth proportional to 438,955.38, 605,807.60 and 247,981.07 is: 342,241.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,955.38 : 605,807.60 = 247,981.07 : x
  2. Step 2: Convert to fraction form
    438,955.38/605,807.60 = 247,981.07/x
  3. Step 3: Cross multiply
    438,955.38x = 605,807.60 × 247,981.07
  4. Step 4: Simplify right side
    438,955.38x = 150,228,812,593.19
  5. Step 5: Solve for x
    x = 150,228,812,593.19/438,955.38
  6. Step 6: Final answer
    x = 342,241.65

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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.