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Finding the Fourth Proportional to 438,855.52, 605,621.04 and 247,869.28

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Solution

The fourth proportional to 438,855.52, 605,621.04 and 247,869.28 is: 342,059.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,855.52 : 605,621.04 = 247,869.28 : x
  2. Step 2: Convert to fraction form
    438,855.52/605,621.04 = 247,869.28/x
  3. Step 3: Cross multiply
    438,855.52x = 605,621.04 × 247,869.28
  4. Step 4: Simplify right side
    438,855.52x = 150,114,851,137.65
  5. Step 5: Solve for x
    x = 150,114,851,137.65/438,855.52
  6. Step 6: Final answer
    x = 342,059.84

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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.