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Finding the Fourth Proportional to 266,530.89, 399,737.39 and 76,950.03

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Solution

The fourth proportional to 266,530.89, 399,737.39 and 76,950.03 is: 115,408.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,530.89 : 399,737.39 = 76,950.03 : x
  2. Step 2: Convert to fraction form
    266,530.89/399,737.39 = 76,950.03/x
  3. Step 3: Cross multiply
    266,530.89x = 399,737.39 × 76,950.03
  4. Step 4: Simplify right side
    266,530.89x = 30,759,803,767.87
  5. Step 5: Solve for x
    x = 30,759,803,767.87/266,530.89
  6. Step 6: Final answer
    x = 115,408.03

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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.