Home / 317,708.63-438,439.10-172,514.60

Finding the Fourth Proportional to 317,708.63, 438,439.10 and 172,514.60

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Solution

The fourth proportional to 317,708.63, 438,439.10 and 172,514.60 is: 238,070.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,708.63 : 438,439.10 = 172,514.60 : x
  2. Step 2: Convert to fraction form
    317,708.63/438,439.10 = 172,514.60/x
  3. Step 3: Cross multiply
    317,708.63x = 438,439.10 × 172,514.60
  4. Step 4: Simplify right side
    317,708.63x = 75,637,142,906.09
  5. Step 5: Solve for x
    x = 75,637,142,906.09/317,708.63
  6. Step 6: Final answer
    x = 238,070.79

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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.