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Finding the Fourth Proportional to 321,952.79, 482,928.75 and 122,272.81

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Solution

The fourth proportional to 321,952.79, 482,928.75 and 122,272.81 is: 183,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,952.79 : 482,928.75 = 122,272.81 : x
  2. Step 2: Convert to fraction form
    321,952.79/482,928.75 = 122,272.81/x
  3. Step 3: Cross multiply
    321,952.79x = 482,928.75 × 122,272.81
  4. Step 4: Simplify right side
    321,952.79x = 59,049,054,084.97
  5. Step 5: Solve for x
    x = 59,049,054,084.97/321,952.79
  6. Step 6: Final answer
    x = 183,409.04

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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.