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Finding the Fourth Proportional to 438,634.44, 605,310.30 and 247,655.88

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Solution

The fourth proportional to 438,634.44, 605,310.30 and 247,655.88 is: 341,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,634.44 : 605,310.30 = 247,655.88 : x
  2. Step 2: Convert to fraction form
    438,634.44/605,310.30 = 247,655.88/x
  3. Step 3: Cross multiply
    438,634.44x = 605,310.30 × 247,655.88
  4. Step 4: Simplify right side
    438,634.44x = 149,908,655,019.56
  5. Step 5: Solve for x
    x = 149,908,655,019.56/438,634.44
  6. Step 6: Final answer
    x = 341,762.16

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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.