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Finding the Fourth Proportional to 228,620.57, 315,492.41 and 126,643.89

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Solution

The fourth proportional to 228,620.57, 315,492.41 and 126,643.89 is: 174,766.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,620.57 : 315,492.41 = 126,643.89 : x
  2. Step 2: Convert to fraction form
    228,620.57/315,492.41 = 126,643.89/x
  3. Step 3: Cross multiply
    228,620.57x = 315,492.41 × 126,643.89
  4. Step 4: Simplify right side
    228,620.57x = 39,955,185,434.66
  5. Step 5: Solve for x
    x = 39,955,185,434.66/228,620.57
  6. Step 6: Final answer
    x = 174,766.37

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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.