Home / 317,640.42-438,344.07-172,446.10

Finding the Fourth Proportional to 317,640.42, 438,344.07 and 172,446.10

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Solution

The fourth proportional to 317,640.42, 438,344.07 and 172,446.10 is: 237,975.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,640.42 : 438,344.07 = 172,446.10 : x
  2. Step 2: Convert to fraction form
    317,640.42/438,344.07 = 172,446.10/x
  3. Step 3: Cross multiply
    317,640.42x = 438,344.07 × 172,446.10
  4. Step 4: Simplify right side
    317,640.42x = 75,590,725,329.63
  5. Step 5: Solve for x
    x = 75,590,725,329.63/317,640.42
  6. Step 6: Final answer
    x = 237,975.78

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1.5x scale

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.