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Finding the Fourth Proportional to 438,952.39, 605,803.46 and 247,978.08

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Solution

The fourth proportional to 438,952.39, 605,803.46 and 247,978.08 is: 342,237.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,952.39 : 605,803.46 = 247,978.08 : x
  2. Step 2: Convert to fraction form
    438,952.39/605,803.46 = 247,978.08/x
  3. Step 3: Cross multiply
    438,952.39x = 605,803.46 × 247,978.08
  4. Step 4: Simplify right side
    438,952.39x = 150,225,977,628.27
  5. Step 5: Solve for x
    x = 150,225,977,628.27/438,952.39
  6. Step 6: Final answer
    x = 342,237.52

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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.