Home / 217,480.32-300,136.56-121,992.96

Finding the Fourth Proportional to 217,480.32, 300,136.56 and 121,992.96

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Solution

The fourth proportional to 217,480.32, 300,136.56 and 121,992.96 is: 168,357.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,480.32 : 300,136.56 = 121,992.96 : x
  2. Step 2: Convert to fraction form
    217,480.32/300,136.56 = 121,992.96/x
  3. Step 3: Cross multiply
    217,480.32x = 300,136.56 × 121,992.96
  4. Step 4: Simplify right side
    217,480.32x = 36,614,547,358.62
  5. Step 5: Solve for x
    x = 36,614,547,358.62/217,480.32
  6. Step 6: Final answer
    x = 168,357.98

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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.