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Finding the Fourth Proportional to 266,376.98, 399,723.10 and 98,015.53

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Solution

The fourth proportional to 266,376.98, 399,723.10 and 98,015.53 is: 147,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,376.98 : 399,723.10 = 98,015.53 : x
  2. Step 2: Convert to fraction form
    266,376.98/399,723.10 = 98,015.53/x
  3. Step 3: Cross multiply
    266,376.98x = 399,723.10 × 98,015.53
  4. Step 4: Simplify right side
    266,376.98x = 39,179,071,556.21
  5. Step 5: Solve for x
    x = 39,179,071,556.21/266,376.98
  6. Step 6: Final answer
    x = 147,081.30

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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.