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Finding the Fourth Proportional to 228,344.42, 315,115.90 and 126,376.91

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Solution

The fourth proportional to 228,344.42, 315,115.90 and 126,376.91 is: 174,400.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,344.42 : 315,115.90 = 126,376.91 : x
  2. Step 2: Convert to fraction form
    228,344.42/315,115.90 = 126,376.91/x
  3. Step 3: Cross multiply
    228,344.42x = 315,115.90 × 126,376.91
  4. Step 4: Simplify right side
    228,344.42x = 39,823,373,101.98
  5. Step 5: Solve for x
    x = 39,823,373,101.98/228,344.42
  6. Step 6: Final answer
    x = 174,400.47

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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.