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Finding the Fourth Proportional to 215,600.60, 323,285.70 and 90,800.60

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Solution

The fourth proportional to 215,600.60, 323,285.70 and 90,800.60 is: 136,152.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,600.60 : 323,285.70 = 90,800.60 : x
  2. Step 2: Convert to fraction form
    215,600.60/323,285.70 = 90,800.60/x
  3. Step 3: Cross multiply
    215,600.60x = 323,285.70 × 90,800.60
  4. Step 4: Simplify right side
    215,600.60x = 29,354,535,531.42
  5. Step 5: Solve for x
    x = 29,354,535,531.42/215,600.60
  6. Step 6: Final answer
    x = 136,152.38

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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.