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Finding the Fourth Proportional to 482,372.73, 665,979.30 and 310,370.67

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Solution

The fourth proportional to 482,372.73, 665,979.30 and 310,370.67 is: 428,507.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,372.73 : 665,979.30 = 310,370.67 : x
  2. Step 2: Convert to fraction form
    482,372.73/665,979.30 = 310,370.67/x
  3. Step 3: Cross multiply
    482,372.73x = 665,979.30 × 310,370.67
  4. Step 4: Simplify right side
    482,372.73x = 206,700,441,547.13
  5. Step 5: Solve for x
    x = 206,700,441,547.13/482,372.73
  6. Step 6: Final answer
    x = 428,507.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.