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Finding the Fourth Proportional to 251,251.75, 346,728.75 and 136,531.30

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Solution

The fourth proportional to 251,251.75, 346,728.75 and 136,531.30 is: 188,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,251.75 : 346,728.75 = 136,531.30 : x
  2. Step 2: Convert to fraction form
    251,251.75/346,728.75 = 136,531.30/x
  3. Step 3: Cross multiply
    251,251.75x = 346,728.75 × 136,531.30
  4. Step 4: Simplify right side
    251,251.75x = 47,339,326,984.88
  5. Step 5: Solve for x
    x = 47,339,326,984.88/251,251.75
  6. Step 6: Final answer
    x = 188,413.92

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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.