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Finding the Fourth Proportional to 266,086.35, 399,246.40 and 139,697.24

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Solution

The fourth proportional to 266,086.35, 399,246.40 and 139,697.24 is: 209,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,086.35 : 399,246.40 = 139,697.24 : x
  2. Step 2: Convert to fraction form
    266,086.35/399,246.40 = 139,697.24/x
  3. Step 3: Cross multiply
    266,086.35x = 399,246.40 × 139,697.24
  4. Step 4: Simplify right side
    266,086.35x = 55,773,618,338.33
  5. Step 5: Solve for x
    x = 55,773,618,338.33/266,086.35
  6. Step 6: Final answer
    x = 209,607.21

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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.