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Finding the Fourth Proportional to 255,832.80, 383,714.64 and 68,855.52

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Solution

The fourth proportional to 255,832.80, 383,714.64 and 68,855.52 is: 103,273.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,832.80 : 383,714.64 = 68,855.52 : x
  2. Step 2: Convert to fraction form
    255,832.80/383,714.64 = 68,855.52/x
  3. Step 3: Cross multiply
    255,832.80x = 383,714.64 × 68,855.52
  4. Step 4: Simplify right side
    255,832.80x = 26,420,871,068.81
  5. Step 5: Solve for x
    x = 26,420,871,068.81/255,832.80
  6. Step 6: Final answer
    x = 103,273.98

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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.