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Finding the Fourth Proportional to 266,455.44, 399,707.64 and 76,913.37

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Solution

The fourth proportional to 266,455.44, 399,707.64 and 76,913.37 is: 115,377.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,455.44 : 399,707.64 = 76,913.37 : x
  2. Step 2: Convert to fraction form
    266,455.44/399,707.64 = 76,913.37/x
  3. Step 3: Cross multiply
    266,455.44x = 399,707.64 × 76,913.37
  4. Step 4: Simplify right side
    266,455.44x = 30,742,861,607.15
  5. Step 5: Solve for x
    x = 30,742,861,607.15/266,455.44
  6. Step 6: Final answer
    x = 115,377.12

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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.