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Finding the Fourth Proportional to 397,174.68, 548,104.76 and 215,887

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Solution

The fourth proportional to 397,174.68, 548,104.76 and 215,887 is: 297,926.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,174.68 : 548,104.76 = 215,887 : x
  2. Step 2: Convert to fraction form
    397,174.68/548,104.76 = 215,887/x
  3. Step 3: Cross multiply
    397,174.68x = 548,104.76 × 215,887
  4. Step 4: Simplify right side
    397,174.68x = 118,328,692,322.12
  5. Step 5: Solve for x
    x = 118,328,692,322.12/397,174.68
  6. Step 6: Final answer
    x = 297,926.07

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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.