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Finding the Fourth Proportional to 215,706.96, 323,790.48 and 190,904.76

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Solution

The fourth proportional to 215,706.96, 323,790.48 and 190,904.76 is: 286,560.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,706.96 : 323,790.48 = 190,904.76 : x
  2. Step 2: Convert to fraction form
    215,706.96/323,790.48 = 190,904.76/x
  3. Step 3: Cross multiply
    215,706.96x = 323,790.48 × 190,904.76
  4. Step 4: Simplify right side
    215,706.96x = 61,813,143,874.68
  5. Step 5: Solve for x
    x = 61,813,143,874.68/215,706.96
  6. Step 6: Final answer
    x = 286,560.73

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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.