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Finding the Fourth Proportional to 215,679.36, 297,638.68 and 125,089

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Solution

The fourth proportional to 215,679.36, 297,638.68 and 125,089 is: 172,623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,679.36 : 297,638.68 = 125,089 : x
  2. Step 2: Convert to fraction form
    215,679.36/297,638.68 = 125,089/x
  3. Step 3: Cross multiply
    215,679.36x = 297,638.68 × 125,089
  4. Step 4: Simplify right side
    215,679.36x = 37,231,324,842.52
  5. Step 5: Solve for x
    x = 37,231,324,842.52/215,679.36
  6. Step 6: Final answer
    x = 172,623.49

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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.