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Finding the Fourth Proportional to 266,631.52, 399,888.70 and 77,050.67

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Solution

The fourth proportional to 266,631.52, 399,888.70 and 77,050.67 is: 115,559.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,631.52 : 399,888.70 = 77,050.67 : x
  2. Step 2: Convert to fraction form
    266,631.52/399,888.70 = 77,050.67/x
  3. Step 3: Cross multiply
    266,631.52x = 399,888.70 × 77,050.67
  4. Step 4: Simplify right side
    266,631.52x = 30,811,691,193.05
  5. Step 5: Solve for x
    x = 30,811,691,193.05/266,631.52
  6. Step 6: Final answer
    x = 115,559.07

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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.