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Finding the Fourth Proportional to 438,454.86, 605,039.13 and 247,442.28

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Solution

The fourth proportional to 438,454.86, 605,039.13 and 247,442.28 is: 341,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,454.86 : 605,039.13 = 247,442.28 : x
  2. Step 2: Convert to fraction form
    438,454.86/605,039.13 = 247,442.28/x
  3. Step 3: Cross multiply
    438,454.86x = 605,039.13 × 247,442.28
  4. Step 4: Simplify right side
    438,454.86x = 149,712,261,816.42
  5. Step 5: Solve for x
    x = 149,712,261,816.42/438,454.86
  6. Step 6: Final answer
    x = 341,454.22

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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.