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Finding the Fourth Proportional to 217,160.80, 325,773.60 and 76,908.40

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Solution

The fourth proportional to 217,160.80, 325,773.60 and 76,908.40 is: 115,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,160.80 : 325,773.60 = 76,908.40 : x
  2. Step 2: Convert to fraction form
    217,160.80/325,773.60 = 76,908.40/x
  3. Step 3: Cross multiply
    217,160.80x = 325,773.60 × 76,908.40
  4. Step 4: Simplify right side
    217,160.80x = 25,054,726,338.24
  5. Step 5: Solve for x
    x = 25,054,726,338.24/217,160.80
  6. Step 6: Final answer
    x = 115,374.07

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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.