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Finding the Fourth Proportional to 228,394.60, 315,176.64 and 126,424.51

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Solution

The fourth proportional to 228,394.60, 315,176.64 and 126,424.51 is: 174,461.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,394.60 : 315,176.64 = 126,424.51 : x
  2. Step 2: Convert to fraction form
    228,394.60/315,176.64 = 126,424.51/x
  3. Step 3: Cross multiply
    228,394.60x = 315,176.64 × 126,424.51
  4. Step 4: Simplify right side
    228,394.60x = 39,846,051,487.50
  5. Step 5: Solve for x
    x = 39,846,051,487.50/228,394.60
  6. Step 6: Final answer
    x = 174,461.44

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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.