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Finding the Fourth Proportional to 217,071.50, 299,559.59 and 126,489.61

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Solution

The fourth proportional to 217,071.50, 299,559.59 and 126,489.61 is: 174,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,071.50 : 299,559.59 = 126,489.61 : x
  2. Step 2: Convert to fraction form
    217,071.50/299,559.59 = 126,489.61/x
  3. Step 3: Cross multiply
    217,071.50x = 299,559.59 × 126,489.61
  4. Step 4: Simplify right side
    217,071.50x = 37,891,175,710.86
  5. Step 5: Solve for x
    x = 37,891,175,710.86/217,071.50
  6. Step 6: Final answer
    x = 174,556.20

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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.