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Finding the Fourth Proportional to 342,138.88, 472,139.82 and 187,093.92

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Solution

The fourth proportional to 342,138.88, 472,139.82 and 187,093.92 is: 258,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,138.88 : 472,139.82 = 187,093.92 : x
  2. Step 2: Convert to fraction form
    342,138.88/472,139.82 = 187,093.92/x
  3. Step 3: Cross multiply
    342,138.88x = 472,139.82 × 187,093.92
  4. Step 4: Simplify right side
    342,138.88x = 88,334,491,482.42
  5. Step 5: Solve for x
    x = 88,334,491,482.42/342,138.88
  6. Step 6: Final answer
    x = 258,183.14

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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.