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Finding the Fourth Proportional to 395,206.30, 545,395.32 and 240,104.80

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Solution

The fourth proportional to 395,206.30, 545,395.32 and 240,104.80 is: 331,351.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,206.30 : 545,395.32 = 240,104.80 : x
  2. Step 2: Convert to fraction form
    395,206.30/545,395.32 = 240,104.80/x
  3. Step 3: Cross multiply
    395,206.30x = 545,395.32 × 240,104.80
  4. Step 4: Simplify right side
    395,206.30x = 130,952,034,229.54
  5. Step 5: Solve for x
    x = 130,952,034,229.54/395,206.30
  6. Step 6: Final answer
    x = 331,351.08

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1.5x scale

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.