Home / 345,474.45-517,041.23-212,438.97

Finding the Fourth Proportional to 345,474.45, 517,041.23 and 212,438.97

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Solution

The fourth proportional to 345,474.45, 517,041.23 and 212,438.97 is: 317,938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,474.45 : 517,041.23 = 212,438.97 : x
  2. Step 2: Convert to fraction form
    345,474.45/517,041.23 = 212,438.97/x
  3. Step 3: Cross multiply
    345,474.45x = 517,041.23 × 212,438.97
  4. Step 4: Simplify right side
    345,474.45x = 109,839,705,286.54
  5. Step 5: Solve for x
    x = 109,839,705,286.54/345,474.45
  6. Step 6: Final answer
    x = 317,938.72

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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.