Home / 217,015.65-299,473.35-121,517.57

Finding the Fourth Proportional to 217,015.65, 299,473.35 and 121,517.57

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Solution

The fourth proportional to 217,015.65, 299,473.35 and 121,517.57 is: 167,689.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,015.65 : 299,473.35 = 121,517.57 : x
  2. Step 2: Convert to fraction form
    217,015.65/299,473.35 = 121,517.57/x
  3. Step 3: Cross multiply
    217,015.65x = 299,473.35 × 121,517.57
  4. Step 4: Simplify right side
    217,015.65x = 36,391,272,274.39
  5. Step 5: Solve for x
    x = 36,391,272,274.39/217,015.65
  6. Step 6: Final answer
    x = 167,689.62

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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.