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Finding the Fourth Proportional to 266,088.22, 399,249.22 and 139,699.10

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Solution

The fourth proportional to 266,088.22, 399,249.22 and 139,699.10 is: 209,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,088.22 : 399,249.22 = 139,699.10 : x
  2. Step 2: Convert to fraction form
    266,088.22/399,249.22 = 139,699.10/x
  3. Step 3: Cross multiply
    266,088.22x = 399,249.22 × 139,699.10
  4. Step 4: Simplify right side
    266,088.22x = 55,774,756,709.70
  5. Step 5: Solve for x
    x = 55,774,756,709.70/266,088.22
  6. Step 6: Final answer
    x = 209,610.02

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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.