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Finding the Fourth Proportional to 397,182.74, 548,115.84 and 215,895.08

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Solution

The fourth proportional to 397,182.74, 548,115.84 and 215,895.08 is: 297,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,182.74 : 548,115.84 = 215,895.08 : x
  2. Step 2: Convert to fraction form
    397,182.74/548,115.84 = 215,895.08/x
  3. Step 3: Cross multiply
    397,182.74x = 548,115.84 × 215,895.08
  4. Step 4: Simplify right side
    397,182.74x = 118,335,514,496.36
  5. Step 5: Solve for x
    x = 118,335,514,496.36/397,182.74
  6. Step 6: Final answer
    x = 297,937.21

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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.