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Finding the Fourth Proportional to 442,940.40, 610,877.70 and 281,734.20

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Solution

The fourth proportional to 442,940.40, 610,877.70 and 281,734.20 is: 388,551.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,940.40 : 610,877.70 = 281,734.20 : x
  2. Step 2: Convert to fraction form
    442,940.40/610,877.70 = 281,734.20/x
  3. Step 3: Cross multiply
    442,940.40x = 610,877.70 × 281,734.20
  4. Step 4: Simplify right side
    442,940.40x = 172,105,140,107.34
  5. Step 5: Solve for x
    x = 172,105,140,107.34/442,940.40
  6. Step 6: Final answer
    x = 388,551.46

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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.