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Finding the Fourth Proportional to 212,920.20, 319,380.30 and 202,552.20

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Solution

The fourth proportional to 212,920.20, 319,380.30 and 202,552.20 is: 303,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,920.20 : 319,380.30 = 202,552.20 : x
  2. Step 2: Convert to fraction form
    212,920.20/319,380.30 = 202,552.20/x
  3. Step 3: Cross multiply
    212,920.20x = 319,380.30 × 202,552.20
  4. Step 4: Simplify right side
    212,920.20x = 64,691,182,401.66
  5. Step 5: Solve for x
    x = 64,691,182,401.66/212,920.20
  6. Step 6: Final answer
    x = 303,828.30

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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.