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Finding the Fourth Proportional to 438,893.95, 605,722.90 and 247,919.64

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Solution

The fourth proportional to 438,893.95, 605,722.90 and 247,919.64 is: 342,156.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,893.95 : 605,722.90 = 247,919.64 : x
  2. Step 2: Convert to fraction form
    438,893.95/605,722.90 = 247,919.64/x
  3. Step 3: Cross multiply
    438,893.95x = 605,722.90 × 247,919.64
  4. Step 4: Simplify right side
    438,893.95x = 150,170,600,279.14
  5. Step 5: Solve for x
    x = 150,170,600,279.14/438,893.95
  6. Step 6: Final answer
    x = 342,156.92

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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.