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Finding the Fourth Proportional to 299,128.55, 448,780.30 and 88,771.95

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Solution

The fourth proportional to 299,128.55, 448,780.30 and 88,771.95 is: 133,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,128.55 : 448,780.30 = 88,771.95 : x
  2. Step 2: Convert to fraction form
    299,128.55/448,780.30 = 88,771.95/x
  3. Step 3: Cross multiply
    299,128.55x = 448,780.30 × 88,771.95
  4. Step 4: Simplify right side
    299,128.55x = 39,839,102,130.66
  5. Step 5: Solve for x
    x = 39,839,102,130.66/299,128.55
  6. Step 6: Final answer
    x = 133,183.89

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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.