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Finding the Fourth Proportional to 217,489.68, 300,074.08 and 126,849.60

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Solution

The fourth proportional to 217,489.68, 300,074.08 and 126,849.60 is: 175,016.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,489.68 : 300,074.08 = 126,849.60 : x
  2. Step 2: Convert to fraction form
    217,489.68/300,074.08 = 126,849.60/x
  3. Step 3: Cross multiply
    217,489.68x = 300,074.08 × 126,849.60
  4. Step 4: Simplify right side
    217,489.68x = 38,064,277,018.37
  5. Step 5: Solve for x
    x = 38,064,277,018.37/217,489.68
  6. Step 6: Final answer
    x = 175,016.47

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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.