Home / 212,645.28-318,967.92-145,883.04

Finding the Fourth Proportional to 212,645.28, 318,967.92 and 145,883.04

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Solution

The fourth proportional to 212,645.28, 318,967.92 and 145,883.04 is: 218,824.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,645.28 : 318,967.92 = 145,883.04 : x
  2. Step 2: Convert to fraction form
    212,645.28/318,967.92 = 145,883.04/x
  3. Step 3: Cross multiply
    212,645.28x = 318,967.92 × 145,883.04
  4. Step 4: Simplify right side
    212,645.28x = 46,532,009,832.08
  5. Step 5: Solve for x
    x = 46,532,009,832.08/212,645.28
  6. Step 6: Final answer
    x = 218,824.56

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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.