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Finding the Fourth Proportional to 228,323.14, 315,081.21 and 126,348.53

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Solution

The fourth proportional to 228,323.14, 315,081.21 and 126,348.53 is: 174,358.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,323.14 : 315,081.21 = 126,348.53 : x
  2. Step 2: Convert to fraction form
    228,323.14/315,081.21 = 126,348.53/x
  3. Step 3: Cross multiply
    228,323.14x = 315,081.21 × 126,348.53
  4. Step 4: Simplify right side
    228,323.14x = 39,810,048,975.63
  5. Step 5: Solve for x
    x = 39,810,048,975.63/228,323.14
  6. Step 6: Final answer
    x = 174,358.37

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1.5x scale

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.