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Finding the Fourth Proportional to 499,617.89, 749,419.89 and 120,535.41

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Solution

The fourth proportional to 499,617.89, 749,419.89 and 120,535.41 is: 180,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,617.89 : 749,419.89 = 120,535.41 : x
  2. Step 2: Convert to fraction form
    499,617.89/749,419.89 = 120,535.41/x
  3. Step 3: Cross multiply
    499,617.89x = 749,419.89 × 120,535.41
  4. Step 4: Simplify right side
    499,617.89x = 90,331,633,703.30
  5. Step 5: Solve for x
    x = 90,331,633,703.30/499,617.89
  6. Step 6: Final answer
    x = 180,801.44

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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.