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Finding the Fourth Proportional to 212,967.80, 319,062.90 and 173,310.20

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Solution

The fourth proportional to 212,967.80, 319,062.90 and 173,310.20 is: 259,648.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,967.80 : 319,062.90 = 173,310.20 : x
  2. Step 2: Convert to fraction form
    212,967.80/319,062.90 = 173,310.20/x
  3. Step 3: Cross multiply
    212,967.80x = 319,062.90 × 173,310.20
  4. Step 4: Simplify right side
    212,967.80x = 55,296,855,011.58
  5. Step 5: Solve for x
    x = 55,296,855,011.58/212,967.80
  6. Step 6: Final answer
    x = 259,648.90

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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.