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Finding the Fourth Proportional to 213,198.75, 319,799.34 and 88,539.75

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Solution

The fourth proportional to 213,198.75, 319,799.34 and 88,539.75 is: 132,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,198.75 : 319,799.34 = 88,539.75 : x
  2. Step 2: Convert to fraction form
    213,198.75/319,799.34 = 88,539.75/x
  3. Step 3: Cross multiply
    213,198.75x = 319,799.34 × 88,539.75
  4. Step 4: Simplify right side
    213,198.75x = 28,314,953,613.77
  5. Step 5: Solve for x
    x = 28,314,953,613.77/213,198.75
  6. Step 6: Final answer
    x = 132,810.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.