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Finding the Fourth Proportional to 217,350, 299,943.81 and 126,768.51

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Solution

The fourth proportional to 217,350, 299,943.81 and 126,768.51 is: 174,941.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,350 : 299,943.81 = 126,768.51 : x
  2. Step 2: Convert to fraction form
    217,350/299,943.81 = 126,768.51/x
  3. Step 3: Cross multiply
    217,350x = 299,943.81 × 126,768.51
  4. Step 4: Simplify right side
    217,350x = 38,023,429,877.42
  5. Step 5: Solve for x
    x = 38,023,429,877.42/217,350
  6. Step 6: Final answer
    x = 174,941.02

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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.