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Finding the Fourth Proportional to 321,657.75, 482,507.28 and 84,994.38

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Solution

The fourth proportional to 321,657.75, 482,507.28 and 84,994.38 is: 127,497.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,657.75 : 482,507.28 = 84,994.38 : x
  2. Step 2: Convert to fraction form
    321,657.75/482,507.28 = 84,994.38/x
  3. Step 3: Cross multiply
    321,657.75x = 482,507.28 × 84,994.38
  4. Step 4: Simplify right side
    321,657.75x = 41,010,407,109.09
  5. Step 5: Solve for x
    x = 41,010,407,109.09/321,657.75
  6. Step 6: Final answer
    x = 127,497.03

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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.