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Finding the Fourth Proportional to 395,203.30, 545,391.17 and 240,101.80

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Solution

The fourth proportional to 395,203.30, 545,391.17 and 240,101.80 is: 331,346.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,203.30 : 545,391.17 = 240,101.80 : x
  2. Step 2: Convert to fraction form
    395,203.30/545,391.17 = 240,101.80/x
  3. Step 3: Cross multiply
    395,203.30x = 545,391.17 × 240,101.80
  4. Step 4: Simplify right side
    395,203.30x = 130,949,401,621.11
  5. Step 5: Solve for x
    x = 130,949,401,621.11/395,203.30
  6. Step 6: Final answer
    x = 331,346.93

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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.