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Finding the Fourth Proportional to 397,354.56, 548,215.10 and 225,254.07

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Solution

The fourth proportional to 397,354.56, 548,215.10 and 225,254.07 is: 310,774.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,354.56 : 548,215.10 = 225,254.07 : x
  2. Step 2: Convert to fraction form
    397,354.56/548,215.10 = 225,254.07/x
  3. Step 3: Cross multiply
    397,354.56x = 548,215.10 × 225,254.07
  4. Step 4: Simplify right side
    397,354.56x = 123,487,681,384.19
  5. Step 5: Solve for x
    x = 123,487,681,384.19/397,354.56
  6. Step 6: Final answer
    x = 310,774.54

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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.