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Finding the Fourth Proportional to 192,319.68, 287,974.80 and 135,854.40

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Solution

The fourth proportional to 192,319.68, 287,974.80 and 135,854.40 is: 203,425.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,319.68 : 287,974.80 = 135,854.40 : x
  2. Step 2: Convert to fraction form
    192,319.68/287,974.80 = 135,854.40/x
  3. Step 3: Cross multiply
    192,319.68x = 287,974.80 × 135,854.40
  4. Step 4: Simplify right side
    192,319.68x = 39,122,643,669.12
  5. Step 5: Solve for x
    x = 39,122,643,669.12/192,319.68
  6. Step 6: Final answer
    x = 203,425.07

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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.