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Finding the Fourth Proportional to 228,626.61, 315,504.66 and 126,658.69

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Solution

The fourth proportional to 228,626.61, 315,504.66 and 126,658.69 is: 174,788.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,626.61 : 315,504.66 = 126,658.69 : x
  2. Step 2: Convert to fraction form
    228,626.61/315,504.66 = 126,658.69/x
  3. Step 3: Cross multiply
    228,626.61x = 315,504.66 × 126,658.69
  4. Step 4: Simplify right side
    228,626.61x = 39,961,406,924.50
  5. Step 5: Solve for x
    x = 39,961,406,924.50/228,626.61
  6. Step 6: Final answer
    x = 174,788.96

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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.