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Finding the Fourth Proportional to 322,482.66, 483,728.02 and 85,823.88

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Solution

The fourth proportional to 322,482.66, 483,728.02 and 85,823.88 is: 128,736.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,482.66 : 483,728.02 = 85,823.88 : x
  2. Step 2: Convert to fraction form
    322,482.66/483,728.02 = 85,823.88/x
  3. Step 3: Cross multiply
    322,482.66x = 483,728.02 × 85,823.88
  4. Step 4: Simplify right side
    322,482.66x = 41,515,415,541.12
  5. Step 5: Solve for x
    x = 41,515,415,541.12/322,482.66
  6. Step 6: Final answer
    x = 128,736.89

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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.