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Finding the Fourth Proportional to 324,370.20, 486,482.40 and 212,833.20

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Solution

The fourth proportional to 324,370.20, 486,482.40 and 212,833.20 is: 319,201.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,370.20 : 486,482.40 = 212,833.20 : x
  2. Step 2: Convert to fraction form
    324,370.20/486,482.40 = 212,833.20/x
  3. Step 3: Cross multiply
    324,370.20x = 486,482.40 × 212,833.20
  4. Step 4: Simplify right side
    324,370.20x = 103,539,605,935.68
  5. Step 5: Solve for x
    x = 103,539,605,935.68/324,370.20
  6. Step 6: Final answer
    x = 319,201.97

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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.