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Finding the Fourth Proportional to 228,291.98, 315,036.87 and 126,314.78

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Solution

The fourth proportional to 228,291.98, 315,036.87 and 126,314.78 is: 174,311.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,291.98 : 315,036.87 = 126,314.78 : x
  2. Step 2: Convert to fraction form
    228,291.98/315,036.87 = 126,314.78/x
  3. Step 3: Cross multiply
    228,291.98x = 315,036.87 × 126,314.78
  4. Step 4: Simplify right side
    228,291.98x = 39,793,812,925.94
  5. Step 5: Solve for x
    x = 39,793,812,925.94/228,291.98
  6. Step 6: Final answer
    x = 174,311.04

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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.