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Finding the Fourth Proportional to 315,007.75, 472,511.64 and 93,391.75

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Solution

The fourth proportional to 315,007.75, 472,511.64 and 93,391.75 is: 140,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,007.75 : 472,511.64 = 93,391.75 : x
  2. Step 2: Convert to fraction form
    315,007.75/472,511.64 = 93,391.75/x
  3. Step 3: Cross multiply
    315,007.75x = 472,511.64 × 93,391.75
  4. Step 4: Simplify right side
    315,007.75x = 44,128,688,954.97
  5. Step 5: Solve for x
    x = 44,128,688,954.97/315,007.75
  6. Step 6: Final answer
    x = 140,087.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.