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Finding the Fourth Proportional to 311,354.31, 429,655.63 and 173,525.89

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Solution

The fourth proportional to 311,354.31, 429,655.63 and 173,525.89 is: 239,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,354.31 : 429,655.63 = 173,525.89 : x
  2. Step 2: Convert to fraction form
    311,354.31/429,655.63 = 173,525.89/x
  3. Step 3: Cross multiply
    311,354.31x = 429,655.63 × 173,525.89
  4. Step 4: Simplify right side
    311,354.31x = 74,556,375,589.26
  5. Step 5: Solve for x
    x = 74,556,375,589.26/311,354.31
  6. Step 6: Final answer
    x = 239,458.31

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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.