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Finding the Fourth Proportional to 379,041.16, 523,076.67 and 217,927.72

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Solution

The fourth proportional to 379,041.16, 523,076.67 and 217,927.72 is: 300,740.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,041.16 : 523,076.67 = 217,927.72 : x
  2. Step 2: Convert to fraction form
    379,041.16/523,076.67 = 217,927.72/x
  3. Step 3: Cross multiply
    379,041.16x = 523,076.67 × 217,927.72
  4. Step 4: Simplify right side
    379,041.16x = 113,992,906,078.29
  5. Step 5: Solve for x
    x = 113,992,906,078.29/379,041.16
  6. Step 6: Final answer
    x = 300,740.18

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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.