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Finding the Fourth Proportional to 212,489.88, 318,527.46 and 101,759.64

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Solution

The fourth proportional to 212,489.88, 318,527.46 and 101,759.64 is: 152,540.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,489.88 : 318,527.46 = 101,759.64 : x
  2. Step 2: Convert to fraction form
    212,489.88/318,527.46 = 101,759.64/x
  3. Step 3: Cross multiply
    212,489.88x = 318,527.46 × 101,759.64
  4. Step 4: Simplify right side
    212,489.88x = 32,413,239,659.71
  5. Step 5: Solve for x
    x = 32,413,239,659.71/212,489.88
  6. Step 6: Final answer
    x = 152,540.16

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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.