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Finding the Fourth Proportional to 372,384.52, 513,928.46 and 219,471.95

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Solution

The fourth proportional to 372,384.52, 513,928.46 and 219,471.95 is: 302,893.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,384.52 : 513,928.46 = 219,471.95 : x
  2. Step 2: Convert to fraction form
    372,384.52/513,928.46 = 219,471.95/x
  3. Step 3: Cross multiply
    372,384.52x = 513,928.46 × 219,471.95
  4. Step 4: Simplify right side
    372,384.52x = 112,792,877,609.70
  5. Step 5: Solve for x
    x = 112,792,877,609.70/372,384.52
  6. Step 6: Final answer
    x = 302,893.58

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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.