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Finding the Fourth Proportional to 212,572.88, 318,651.96 and 101,842.64

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Solution

The fourth proportional to 212,572.88, 318,651.96 and 101,842.64 is: 152,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,572.88 : 318,651.96 = 101,842.64 : x
  2. Step 2: Convert to fraction form
    212,572.88/318,651.96 = 101,842.64/x
  3. Step 3: Cross multiply
    212,572.88x = 318,651.96 × 101,842.64
  4. Step 4: Simplify right side
    212,572.88x = 32,452,356,847.57
  5. Step 5: Solve for x
    x = 32,452,356,847.57/212,572.88
  6. Step 6: Final answer
    x = 152,664.61

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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.