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Finding the Fourth Proportional to 319,980.33, 480,232.85 and 162,253.89

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Solution

The fourth proportional to 319,980.33, 480,232.85 and 162,253.89 is: 243,513.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,980.33 : 480,232.85 = 162,253.89 : x
  2. Step 2: Convert to fraction form
    319,980.33/480,232.85 = 162,253.89/x
  3. Step 3: Cross multiply
    319,980.33x = 480,232.85 × 162,253.89
  4. Step 4: Simplify right side
    319,980.33x = 77,919,647,207.02
  5. Step 5: Solve for x
    x = 77,919,647,207.02/319,980.33
  6. Step 6: Final answer
    x = 243,513.87

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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.