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Finding the Fourth Proportional to 255,276.80, 383,090.12 and 89,064.80

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Solution

The fourth proportional to 255,276.80, 383,090.12 and 89,064.80 is: 133,658.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,276.80 : 383,090.12 = 89,064.80 : x
  2. Step 2: Convert to fraction form
    255,276.80/383,090.12 = 89,064.80/x
  3. Step 3: Cross multiply
    255,276.80x = 383,090.12 × 89,064.80
  4. Step 4: Simplify right side
    255,276.80x = 34,119,844,919.78
  5. Step 5: Solve for x
    x = 34,119,844,919.78/255,276.80
  6. Step 6: Final answer
    x = 133,658.23

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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.