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Finding the Fourth Proportional to 321,885.92, 483,616.08 and 303,981.60

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Solution

The fourth proportional to 321,885.92, 483,616.08 and 303,981.60 is: 456,715.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,885.92 : 483,616.08 = 303,981.60 : x
  2. Step 2: Convert to fraction form
    321,885.92/483,616.08 = 303,981.60/x
  3. Step 3: Cross multiply
    321,885.92x = 483,616.08 × 303,981.60
  4. Step 4: Simplify right side
    321,885.92x = 147,010,389,784.13
  5. Step 5: Solve for x
    x = 147,010,389,784.13/321,885.92
  6. Step 6: Final answer
    x = 456,715.81

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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.