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Finding the Fourth Proportional to 215,915.10, 298,101.51 and 135,452.94

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Solution

The fourth proportional to 215,915.10, 298,101.51 and 135,452.94 is: 187,012.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,915.10 : 298,101.51 = 135,452.94 : x
  2. Step 2: Convert to fraction form
    215,915.10/298,101.51 = 135,452.94/x
  3. Step 3: Cross multiply
    215,915.10x = 298,101.51 × 135,452.94
  4. Step 4: Simplify right side
    215,915.10x = 40,378,725,947.94
  5. Step 5: Solve for x
    x = 40,378,725,947.94/215,915.10
  6. Step 6: Final answer
    x = 187,012.05

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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.