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Finding the Fourth Proportional to 252,341.40, 378,512.10 and 207,240.60

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Solution

The fourth proportional to 252,341.40, 378,512.10 and 207,240.60 is: 310,860.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,341.40 : 378,512.10 = 207,240.60 : x
  2. Step 2: Convert to fraction form
    252,341.40/378,512.10 = 207,240.60/x
  3. Step 3: Cross multiply
    252,341.40x = 378,512.10 × 207,240.60
  4. Step 4: Simplify right side
    252,341.40x = 78,443,074,711.26
  5. Step 5: Solve for x
    x = 78,443,074,711.26/252,341.40
  6. Step 6: Final answer
    x = 310,860.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.