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Finding the Fourth Proportional to 378,373.80, 522,168.45 and 225,391.11

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Solution

The fourth proportional to 378,373.80, 522,168.45 and 225,391.11 is: 311,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,373.80 : 522,168.45 = 225,391.11 : x
  2. Step 2: Convert to fraction form
    378,373.80/522,168.45 = 225,391.11/x
  3. Step 3: Cross multiply
    378,373.80x = 522,168.45 × 225,391.11
  4. Step 4: Simplify right side
    378,373.80x = 117,692,126,552.48
  5. Step 5: Solve for x
    x = 117,692,126,552.48/378,373.80
  6. Step 6: Final answer
    x = 311,047.24

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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.