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Finding the Fourth Proportional to 228,287.39, 315,045.88 and 126,311.19

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Solution

The fourth proportional to 228,287.39, 315,045.88 and 126,311.19 is: 174,314.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,287.39 : 315,045.88 = 126,311.19 : x
  2. Step 2: Convert to fraction form
    228,287.39/315,045.88 = 126,311.19/x
  3. Step 3: Cross multiply
    228,287.39x = 315,045.88 × 126,311.19
  4. Step 4: Simplify right side
    228,287.39x = 39,793,820,007.40
  5. Step 5: Solve for x
    x = 39,793,820,007.40/228,287.39
  6. Step 6: Final answer
    x = 174,314.58

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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.