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Finding the Fourth Proportional to 395,080.65, 545,220.60 and 225,311.13

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Solution

The fourth proportional to 395,080.65, 545,220.60 and 225,311.13 is: 310,934.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,080.65 : 545,220.60 = 225,311.13 : x
  2. Step 2: Convert to fraction form
    395,080.65/545,220.60 = 225,311.13/x
  3. Step 3: Cross multiply
    395,080.65x = 545,220.60 × 225,311.13
  4. Step 4: Simplify right side
    395,080.65x = 122,844,269,485.28
  5. Step 5: Solve for x
    x = 122,844,269,485.28/395,080.65
  6. Step 6: Final answer
    x = 310,934.66

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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.