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Finding the Fourth Proportional to 379,574.08, 523,472.90 and 314,940.94

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Solution

The fourth proportional to 379,574.08, 523,472.90 and 314,940.94 is: 434,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,574.08 : 523,472.90 = 314,940.94 : x
  2. Step 2: Convert to fraction form
    379,574.08/523,472.90 = 314,940.94/x
  3. Step 3: Cross multiply
    379,574.08x = 523,472.90 × 314,940.94
  4. Step 4: Simplify right side
    379,574.08x = 164,863,047,190.53
  5. Step 5: Solve for x
    x = 164,863,047,190.53/379,574.08
  6. Step 6: Final answer
    x = 434,336.95

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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.