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Finding the Fourth Proportional to 217,120.50, 299,626.29 and 121,627.17

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Solution

The fourth proportional to 217,120.50, 299,626.29 and 121,627.17 is: 167,845.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,120.50 : 299,626.29 = 121,627.17 : x
  2. Step 2: Convert to fraction form
    217,120.50/299,626.29 = 121,627.17/x
  3. Step 3: Cross multiply
    217,120.50x = 299,626.29 × 121,627.17
  4. Step 4: Simplify right side
    217,120.50x = 36,442,697,710.30
  5. Step 5: Solve for x
    x = 36,442,697,710.30/217,120.50
  6. Step 6: Final answer
    x = 167,845.49

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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.