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Finding the Fourth Proportional to 266,418.51, 399,785.37 and 98,057.08

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Solution

The fourth proportional to 266,418.51, 399,785.37 and 98,057.08 is: 147,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,418.51 : 399,785.37 = 98,057.08 : x
  2. Step 2: Convert to fraction form
    266,418.51/399,785.37 = 98,057.08/x
  3. Step 3: Cross multiply
    266,418.51x = 399,785.37 × 98,057.08
  4. Step 4: Simplify right side
    266,418.51x = 39,201,786,008.92
  5. Step 5: Solve for x
    x = 39,201,786,008.92/266,418.51
  6. Step 6: Final answer
    x = 147,143.63

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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.