Home / 266,928.10-400,309.78-77,402.44

Finding the Fourth Proportional to 266,928.10, 400,309.78 and 77,402.44

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Solution

The fourth proportional to 266,928.10, 400,309.78 and 77,402.44 is: 116,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,928.10 : 400,309.78 = 77,402.44 : x
  2. Step 2: Convert to fraction form
    266,928.10/400,309.78 = 77,402.44/x
  3. Step 3: Cross multiply
    266,928.10x = 400,309.78 × 77,402.44
  4. Step 4: Simplify right side
    266,928.10x = 30,984,953,727.86
  5. Step 5: Solve for x
    x = 30,984,953,727.86/266,928.10
  6. Step 6: Final answer
    x = 116,079.77

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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.