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Finding the Fourth Proportional to 215,677.60, 323,516.40 and 203,430.40

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Solution

The fourth proportional to 215,677.60, 323,516.40 and 203,430.40 is: 305,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,677.60 : 323,516.40 = 203,430.40 : x
  2. Step 2: Convert to fraction form
    215,677.60/323,516.40 = 203,430.40/x
  3. Step 3: Cross multiply
    215,677.60x = 323,516.40 × 203,430.40
  4. Step 4: Simplify right side
    215,677.60x = 65,813,070,658.56
  5. Step 5: Solve for x
    x = 65,813,070,658.56/215,677.60
  6. Step 6: Final answer
    x = 305,145.60

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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.