Home / 311,895.35-430,418.15-172,198.45

Finding the Fourth Proportional to 311,895.35, 430,418.15 and 172,198.45

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Solution

The fourth proportional to 311,895.35, 430,418.15 and 172,198.45 is: 237,635.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,895.35 : 430,418.15 = 172,198.45 : x
  2. Step 2: Convert to fraction form
    311,895.35/430,418.15 = 172,198.45/x
  3. Step 3: Cross multiply
    311,895.35x = 430,418.15 × 172,198.45
  4. Step 4: Simplify right side
    311,895.35x = 74,117,337,636.32
  5. Step 5: Solve for x
    x = 74,117,337,636.32/311,895.35
  6. Step 6: Final answer
    x = 237,635.28

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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.