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Finding the Fourth Proportional to 215,771.79, 297,626.11 and 143,173.11

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Solution

The fourth proportional to 215,771.79, 297,626.11 and 143,173.11 is: 197,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,771.79 : 297,626.11 = 143,173.11 : x
  2. Step 2: Convert to fraction form
    215,771.79/297,626.11 = 143,173.11/x
  3. Step 3: Cross multiply
    215,771.79x = 297,626.11 × 143,173.11
  4. Step 4: Simplify right side
    215,771.79x = 42,612,055,785.90
  5. Step 5: Solve for x
    x = 42,612,055,785.90/215,771.79
  6. Step 6: Final answer
    x = 197,486.69

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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.