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Finding the Fourth Proportional to 375,639.62, 518,384.25 and 203,557.95

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Solution

The fourth proportional to 375,639.62, 518,384.25 and 203,557.95 is: 280,910.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,639.62 : 518,384.25 = 203,557.95 : x
  2. Step 2: Convert to fraction form
    375,639.62/518,384.25 = 203,557.95/x
  3. Step 3: Cross multiply
    375,639.62x = 518,384.25 × 203,557.95
  4. Step 4: Simplify right side
    375,639.62x = 105,521,235,242.29
  5. Step 5: Solve for x
    x = 105,521,235,242.29/375,639.62
  6. Step 6: Final answer
    x = 280,910.83

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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.