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Finding the Fourth Proportional to 321,899.60, 482,849.40 and 144,412.40

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Solution

The fourth proportional to 321,899.60, 482,849.40 and 144,412.40 is: 216,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,899.60 : 482,849.40 = 144,412.40 : x
  2. Step 2: Convert to fraction form
    321,899.60/482,849.40 = 144,412.40/x
  3. Step 3: Cross multiply
    321,899.60x = 482,849.40 × 144,412.40
  4. Step 4: Simplify right side
    321,899.60x = 69,729,440,692.56
  5. Step 5: Solve for x
    x = 69,729,440,692.56/321,899.60
  6. Step 6: Final answer
    x = 216,618.60

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Similar ratio
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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.