Home / 217,373.32-299,971.38-121,879.72

Finding the Fourth Proportional to 217,373.32, 299,971.38 and 121,879.72

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Solution

The fourth proportional to 217,373.32, 299,971.38 and 121,879.72 is: 168,191.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,373.32 : 299,971.38 = 121,879.72 : x
  2. Step 2: Convert to fraction form
    217,373.32/299,971.38 = 121,879.72/x
  3. Step 3: Cross multiply
    217,373.32x = 299,971.38 × 121,879.72
  4. Step 4: Simplify right side
    217,373.32x = 36,560,427,802.41
  5. Step 5: Solve for x
    x = 36,560,427,802.41/217,373.32
  6. Step 6: Final answer
    x = 168,191.88

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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.