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Finding the Fourth Proportional to 217,175.38, 299,699.13 and 121,683.94

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Solution

The fourth proportional to 217,175.38, 299,699.13 and 121,683.94 is: 167,922.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,175.38 : 299,699.13 = 121,683.94 : x
  2. Step 2: Convert to fraction form
    217,175.38/299,699.13 = 121,683.94/x
  3. Step 3: Cross multiply
    217,175.38x = 299,699.13 × 121,683.94
  4. Step 4: Simplify right side
    217,175.38x = 36,468,570,952.97
  5. Step 5: Solve for x
    x = 36,468,570,952.97/217,175.38
  6. Step 6: Final answer
    x = 167,922.22

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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.