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Finding the Fourth Proportional to 438,718.54, 605,444.01 and 247,760.64

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Solution

The fourth proportional to 438,718.54, 605,444.01 and 247,760.64 is: 341,916.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,718.54 : 605,444.01 = 247,760.64 : x
  2. Step 2: Convert to fraction form
    438,718.54/605,444.01 = 247,760.64/x
  3. Step 3: Cross multiply
    438,718.54x = 605,444.01 × 247,760.64
  4. Step 4: Simplify right side
    438,718.54x = 150,005,191,135.74
  5. Step 5: Solve for x
    x = 150,005,191,135.74/438,718.54
  6. Step 6: Final answer
    x = 341,916.69

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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.