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Finding the Fourth Proportional to 228,898.73, 315,880.94 and 126,931.39

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Solution

The fourth proportional to 228,898.73, 315,880.94 and 126,931.39 is: 175,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,898.73 : 315,880.94 = 126,931.39 : x
  2. Step 2: Convert to fraction form
    228,898.73/315,880.94 = 126,931.39/x
  3. Step 3: Cross multiply
    228,898.73x = 315,880.94 × 126,931.39
  4. Step 4: Simplify right side
    228,898.73x = 40,095,206,316.33
  5. Step 5: Solve for x
    x = 40,095,206,316.33/228,898.73
  6. Step 6: Final answer
    x = 175,165.70

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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.