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Finding the Fourth Proportional to 325,783.71, 488,675.97 and 89,128.44

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Solution

The fourth proportional to 325,783.71, 488,675.97 and 89,128.44 is: 133,692.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,783.71 : 488,675.97 = 89,128.44 : x
  2. Step 2: Convert to fraction form
    325,783.71/488,675.97 = 89,128.44/x
  3. Step 3: Cross multiply
    325,783.71x = 488,675.97 × 89,128.44
  4. Step 4: Simplify right side
    325,783.71x = 43,554,926,871.59
  5. Step 5: Solve for x
    x = 43,554,926,871.59/325,783.71
  6. Step 6: Final answer
    x = 133,692.77

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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.