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Finding the Fourth Proportional to 266,499.54, 399,635.51 and 154,257.23

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Solution

The fourth proportional to 266,499.54, 399,635.51 and 154,257.23 is: 231,319.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,499.54 : 399,635.51 = 154,257.23 : x
  2. Step 2: Convert to fraction form
    266,499.54/399,635.51 = 154,257.23/x
  3. Step 3: Cross multiply
    266,499.54x = 399,635.51 × 154,257.23
  4. Step 4: Simplify right side
    266,499.54x = 61,646,666,782.24
  5. Step 5: Solve for x
    x = 61,646,666,782.24/266,499.54
  6. Step 6: Final answer
    x = 231,319.97

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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.