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Finding the Fourth Proportional to 397,697.12, 548,640.64 and 236,460.56

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Solution

The fourth proportional to 397,697.12, 548,640.64 and 236,460.56 is: 326,207.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,697.12 : 548,640.64 = 236,460.56 : x
  2. Step 2: Convert to fraction form
    397,697.12/548,640.64 = 236,460.56/x
  3. Step 3: Cross multiply
    397,697.12x = 548,640.64 × 236,460.56
  4. Step 4: Simplify right side
    397,697.12x = 129,731,872,973.16
  5. Step 5: Solve for x
    x = 129,731,872,973.16/397,697.12
  6. Step 6: Final answer
    x = 326,207.73

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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.