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Finding the Fourth Proportional to 266,939.61, 400,130.46 and 89,300.49

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Solution

The fourth proportional to 266,939.61, 400,130.46 and 89,300.49 is: 133,857.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,939.61 : 400,130.46 = 89,300.49 : x
  2. Step 2: Convert to fraction form
    266,939.61/400,130.46 = 89,300.49/x
  3. Step 3: Cross multiply
    266,939.61x = 400,130.46 × 89,300.49
  4. Step 4: Simplify right side
    266,939.61x = 35,731,846,141.93
  5. Step 5: Solve for x
    x = 35,731,846,141.93/266,939.61
  6. Step 6: Final answer
    x = 133,857.41

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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.