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Finding the Fourth Proportional to 217,062.40, 325,334.40 and 90,702.40

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Solution

The fourth proportional to 217,062.40, 325,334.40 and 90,702.40 is: 135,945.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,062.40 : 325,334.40 = 90,702.40 : x
  2. Step 2: Convert to fraction form
    217,062.40/325,334.40 = 90,702.40/x
  3. Step 3: Cross multiply
    217,062.40x = 325,334.40 × 90,702.40
  4. Step 4: Simplify right side
    217,062.40x = 29,508,610,882.56
  5. Step 5: Solve for x
    x = 29,508,610,882.56/217,062.40
  6. Step 6: Final answer
    x = 135,945.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.