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Finding the Fourth Proportional to 321,903.72, 482,894.46 and 85,250.88

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Solution

The fourth proportional to 321,903.72, 482,894.46 and 85,250.88 is: 127,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,903.72 : 482,894.46 = 85,250.88 : x
  2. Step 2: Convert to fraction form
    321,903.72/482,894.46 = 85,250.88/x
  3. Step 3: Cross multiply
    321,903.72x = 482,894.46 × 85,250.88
  4. Step 4: Simplify right side
    321,903.72x = 41,167,177,662.12
  5. Step 5: Solve for x
    x = 41,167,177,662.12/321,903.72
  6. Step 6: Final answer
    x = 127,886.62

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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.