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Finding the Fourth Proportional to 397,445.78, 548,553.95 and 225,367.16

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Solution

The fourth proportional to 397,445.78, 548,553.95 and 225,367.16 is: 311,051.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,445.78 : 548,553.95 = 225,367.16 : x
  2. Step 2: Convert to fraction form
    397,445.78/548,553.95 = 225,367.16/x
  3. Step 3: Cross multiply
    397,445.78x = 548,553.95 × 225,367.16
  4. Step 4: Simplify right side
    397,445.78x = 123,626,041,948.68
  5. Step 5: Solve for x
    x = 123,626,041,948.68/397,445.78
  6. Step 6: Final answer
    x = 311,051.34

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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.