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Finding the Fourth Proportional to 266,558.15, 399,857.88 and 89,065.79

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Solution

The fourth proportional to 266,558.15, 399,857.88 and 89,065.79 is: 133,605.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,558.15 : 399,857.88 = 89,065.79 : x
  2. Step 2: Convert to fraction form
    266,558.15/399,857.88 = 89,065.79/x
  3. Step 3: Cross multiply
    266,558.15x = 399,857.88 × 89,065.79
  4. Step 4: Simplify right side
    266,558.15x = 35,613,655,525.31
  5. Step 5: Solve for x
    x = 35,613,655,525.31/266,558.15
  6. Step 6: Final answer
    x = 133,605.58

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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.