Home / 212,979.30-319,080.15-173,321.70

Finding the Fourth Proportional to 212,979.30, 319,080.15 and 173,321.70

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Solution

The fourth proportional to 212,979.30, 319,080.15 and 173,321.70 is: 259,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,979.30 : 319,080.15 = 173,321.70 : x
  2. Step 2: Convert to fraction form
    212,979.30/319,080.15 = 173,321.70/x
  3. Step 3: Cross multiply
    212,979.30x = 319,080.15 × 173,321.70
  4. Step 4: Simplify right side
    212,979.30x = 55,303,514,034.26
  5. Step 5: Solve for x
    x = 55,303,514,034.26/212,979.30
  6. Step 6: Final answer
    x = 259,666.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.