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Finding the Fourth Proportional to 379,009.10, 523,077.27 and 217,870.94

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Solution

The fourth proportional to 379,009.10, 523,077.27 and 217,870.94 is: 300,687.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,009.10 : 523,077.27 = 217,870.94 : x
  2. Step 2: Convert to fraction form
    379,009.10/523,077.27 = 217,870.94/x
  3. Step 3: Cross multiply
    379,009.10x = 523,077.27 × 217,870.94
  4. Step 4: Simplify right side
    379,009.10x = 113,963,336,507.53
  5. Step 5: Solve for x
    x = 113,963,336,507.53/379,009.10
  6. Step 6: Final answer
    x = 300,687.60

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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.