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Finding the Fourth Proportional to 321,709.20, 482,563.80 and 222,176.40

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Solution

The fourth proportional to 321,709.20, 482,563.80 and 222,176.40 is: 333,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,709.20 : 482,563.80 = 222,176.40 : x
  2. Step 2: Convert to fraction form
    321,709.20/482,563.80 = 222,176.40/x
  3. Step 3: Cross multiply
    321,709.20x = 482,563.80 × 222,176.40
  4. Step 4: Simplify right side
    321,709.20x = 107,214,287,854.32
  5. Step 5: Solve for x
    x = 107,214,287,854.32/321,709.20
  6. Step 6: Final answer
    x = 333,264.60

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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.