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Finding the Fourth Proportional to 255,128.80, 382,485.84 and 89,033.44

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Solution

The fourth proportional to 255,128.80, 382,485.84 and 89,033.44 is: 133,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,128.80 : 382,485.84 = 89,033.44 : x
  2. Step 2: Convert to fraction form
    255,128.80/382,485.84 = 89,033.44/x
  3. Step 3: Cross multiply
    255,128.80x = 382,485.84 × 89,033.44
  4. Step 4: Simplify right side
    255,128.80x = 34,054,030,086.49
  5. Step 5: Solve for x
    x = 34,054,030,086.49/255,128.80
  6. Step 6: Final answer
    x = 133,477.80

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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.