Home / 311,884.20-430,399.89-168,643.90

Finding the Fourth Proportional to 311,884.20, 430,399.89 and 168,643.90

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Solution

The fourth proportional to 311,884.20, 430,399.89 and 168,643.90 is: 232,728.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,884.20 : 430,399.89 = 168,643.90 : x
  2. Step 2: Convert to fraction form
    311,884.20/430,399.89 = 168,643.90/x
  3. Step 3: Cross multiply
    311,884.20x = 430,399.89 × 168,643.90
  4. Step 4: Simplify right side
    311,884.20x = 72,584,315,573.83
  5. Step 5: Solve for x
    x = 72,584,315,573.83/311,884.20
  6. Step 6: Final answer
    x = 232,728.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.