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Finding the Fourth Proportional to 215,999.70, 323,999.55 and 181,785.30

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Solution

The fourth proportional to 215,999.70, 323,999.55 and 181,785.30 is: 272,677.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,999.70 : 323,999.55 = 181,785.30 : x
  2. Step 2: Convert to fraction form
    215,999.70/323,999.55 = 181,785.30/x
  3. Step 3: Cross multiply
    215,999.70x = 323,999.55 × 181,785.30
  4. Step 4: Simplify right side
    215,999.70x = 58,898,355,396.62
  5. Step 5: Solve for x
    x = 58,898,355,396.62/215,999.70
  6. Step 6: Final answer
    x = 272,677.95

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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.