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Finding the Fourth Proportional to 438,813.32, 605,574.33 and 247,855.10

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Solution

The fourth proportional to 438,813.32, 605,574.33 and 247,855.10 is: 342,046.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,813.32 : 605,574.33 = 247,855.10 : x
  2. Step 2: Convert to fraction form
    438,813.32/605,574.33 = 247,855.10/x
  3. Step 3: Cross multiply
    438,813.32x = 605,574.33 × 247,855.10
  4. Step 4: Simplify right side
    438,813.32x = 150,094,686,119.58
  5. Step 5: Solve for x
    x = 150,094,686,119.58/438,813.32
  6. Step 6: Final answer
    x = 342,046.79

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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.