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Finding the Fourth Proportional to 228,897.61, 315,879.38 and 126,930.25

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Solution

The fourth proportional to 228,897.61, 315,879.38 and 126,930.25 is: 175,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,897.61 : 315,879.38 = 126,930.25 : x
  2. Step 2: Convert to fraction form
    228,897.61/315,879.38 = 126,930.25/x
  3. Step 3: Cross multiply
    228,897.61x = 315,879.38 × 126,930.25
  4. Step 4: Simplify right side
    228,897.61x = 40,094,648,909.43
  5. Step 5: Solve for x
    x = 40,094,648,909.43/228,897.61
  6. Step 6: Final answer
    x = 175,164.12

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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.