Home / 616,991.18-925,507.25-212,179.40

Finding the Fourth Proportional to 616,991.18, 925,507.25 and 212,179.40

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Solution

The fourth proportional to 616,991.18, 925,507.25 and 212,179.40 is: 318,276.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,991.18 : 925,507.25 = 212,179.40 : x
  2. Step 2: Convert to fraction form
    616,991.18/925,507.25 = 212,179.40/x
  3. Step 3: Cross multiply
    616,991.18x = 925,507.25 × 212,179.40
  4. Step 4: Simplify right side
    616,991.18x = 196,373,568,903.56
  5. Step 5: Solve for x
    x = 196,373,568,903.56/616,991.18
  6. Step 6: Final answer
    x = 318,276.14

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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.