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Finding the Fourth Proportional to 479,502.77, 661,715.22 and 261,713.45

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Solution

The fourth proportional to 479,502.77, 661,715.22 and 261,713.45 is: 361,165.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,502.77 : 661,715.22 = 261,713.45 : x
  2. Step 2: Convert to fraction form
    479,502.77/661,715.22 = 261,713.45/x
  3. Step 3: Cross multiply
    479,502.77x = 661,715.22 × 261,713.45
  4. Step 4: Simplify right side
    479,502.77x = 173,179,769,835.13
  5. Step 5: Solve for x
    x = 173,179,769,835.13/479,502.77
  6. Step 6: Final answer
    x = 361,165.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.