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Finding the Fourth Proportional to 228,347.91, 315,113.63 and 126,377.60

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Solution

The fourth proportional to 228,347.91, 315,113.63 and 126,377.60 is: 174,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,347.91 : 315,113.63 = 126,377.60 : x
  2. Step 2: Convert to fraction form
    228,347.91/315,113.63 = 126,377.60/x
  3. Step 3: Cross multiply
    228,347.91x = 315,113.63 × 126,377.60
  4. Step 4: Simplify right side
    228,347.91x = 39,823,302,079.23
  5. Step 5: Solve for x
    x = 39,823,302,079.23/228,347.91
  6. Step 6: Final answer
    x = 174,397.49

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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.