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Finding the Fourth Proportional to 351,885.30, 486,005.28 and 231,563.74

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Solution

The fourth proportional to 351,885.30, 486,005.28 and 231,563.74 is: 319,823.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,885.30 : 486,005.28 = 231,563.74 : x
  2. Step 2: Convert to fraction form
    351,885.30/486,005.28 = 231,563.74/x
  3. Step 3: Cross multiply
    351,885.30x = 486,005.28 × 231,563.74
  4. Step 4: Simplify right side
    351,885.30x = 112,541,198,083.18
  5. Step 5: Solve for x
    x = 112,541,198,083.18/351,885.30
  6. Step 6: Final answer
    x = 319,823.53

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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.