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Finding the Fourth Proportional to 215,552.70, 323,329.02 and 65,793.78

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Solution

The fourth proportional to 215,552.70, 323,329.02 and 65,793.78 is: 98,690.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,552.70 : 323,329.02 = 65,793.78 : x
  2. Step 2: Convert to fraction form
    215,552.70/323,329.02 = 65,793.78/x
  3. Step 3: Cross multiply
    215,552.70x = 323,329.02 × 65,793.78
  4. Step 4: Simplify right side
    215,552.70x = 21,273,038,409.50
  5. Step 5: Solve for x
    x = 21,273,038,409.50/215,552.70
  6. Step 6: Final answer
    x = 98,690.66

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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.