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Finding the Fourth Proportional to 215,720.72, 297,696.06 and 120,233.57

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Solution

The fourth proportional to 215,720.72, 297,696.06 and 120,233.57 is: 165,923.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,720.72 : 297,696.06 = 120,233.57 : x
  2. Step 2: Convert to fraction form
    215,720.72/297,696.06 = 120,233.57/x
  3. Step 3: Cross multiply
    215,720.72x = 297,696.06 × 120,233.57
  4. Step 4: Simplify right side
    215,720.72x = 35,793,058,580.25
  5. Step 5: Solve for x
    x = 35,793,058,580.25/215,720.72
  6. Step 6: Final answer
    x = 165,923.14

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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.