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Finding the Fourth Proportional to 215,543.70, 323,315.55 and 215,543.70

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Solution

The fourth proportional to 215,543.70, 323,315.55 and 215,543.70 is: 323,315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,543.70 : 323,315.55 = 215,543.70 : x
  2. Step 2: Convert to fraction form
    215,543.70/323,315.55 = 215,543.70/x
  3. Step 3: Cross multiply
    215,543.70x = 323,315.55 × 215,543.70
  4. Step 4: Simplify right side
    215,543.70x = 69,688,629,914.54
  5. Step 5: Solve for x
    x = 69,688,629,914.54/215,543.70
  6. Step 6: Final answer
    x = 323,315.55

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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.