Home / 317,589.75-438,274.26-172,395.43

Finding the Fourth Proportional to 317,589.75, 438,274.26 and 172,395.43

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Solution

The fourth proportional to 317,589.75, 438,274.26 and 172,395.43 is: 237,905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,589.75 : 438,274.26 = 172,395.43 : x
  2. Step 2: Convert to fraction form
    317,589.75/438,274.26 = 172,395.43/x
  3. Step 3: Cross multiply
    317,589.75x = 438,274.26 × 172,395.43
  4. Step 4: Simplify right side
    317,589.75x = 75,556,479,510.63
  5. Step 5: Solve for x
    x = 75,556,479,510.63/317,589.75
  6. Step 6: Final answer
    x = 237,905.91

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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.