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Finding the Fourth Proportional to 228,624.15, 315,497.91 and 126,649.29

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Solution

The fourth proportional to 228,624.15, 315,497.91 and 126,649.29 is: 174,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,624.15 : 315,497.91 = 126,649.29 : x
  2. Step 2: Convert to fraction form
    228,624.15/315,497.91 = 126,649.29/x
  3. Step 3: Cross multiply
    228,624.15x = 315,497.91 × 126,649.29
  4. Step 4: Simplify right side
    228,624.15x = 39,957,586,297.98
  5. Step 5: Solve for x
    x = 39,957,586,297.98/228,624.15
  6. Step 6: Final answer
    x = 174,774.13

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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.