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Finding the Fourth Proportional to 255,644.31, 383,466.45 and 68,655.81

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Solution

The fourth proportional to 255,644.31, 383,466.45 and 68,655.81 is: 102,983.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,644.31 : 383,466.45 = 68,655.81 : x
  2. Step 2: Convert to fraction form
    255,644.31/383,466.45 = 68,655.81/x
  3. Step 3: Cross multiply
    255,644.31x = 383,466.45 × 68,655.81
  4. Step 4: Simplify right side
    255,644.31x = 26,327,201,428.03
  5. Step 5: Solve for x
    x = 26,327,201,428.03/255,644.31
  6. Step 6: Final answer
    x = 102,983.72

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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.