Home / 212,340.68-318,500.40-79,210.52

Finding the Fourth Proportional to 212,340.68, 318,500.40 and 79,210.52

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Solution

The fourth proportional to 212,340.68, 318,500.40 and 79,210.52 is: 118,811.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,340.68 : 318,500.40 = 79,210.52 : x
  2. Step 2: Convert to fraction form
    212,340.68/318,500.40 = 79,210.52/x
  3. Step 3: Cross multiply
    212,340.68x = 318,500.40 × 79,210.52
  4. Step 4: Simplify right side
    212,340.68x = 25,228,582,304.21
  5. Step 5: Solve for x
    x = 25,228,582,304.21/212,340.68
  6. Step 6: Final answer
    x = 118,811.82

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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.