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Finding the Fourth Proportional to 375,381.35, 518,023.70 and 203,295.36

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Solution

The fourth proportional to 375,381.35, 518,023.70 and 203,295.36 is: 280,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,381.35 : 518,023.70 = 203,295.36 : x
  2. Step 2: Convert to fraction form
    375,381.35/518,023.70 = 203,295.36/x
  3. Step 3: Cross multiply
    375,381.35x = 518,023.70 × 203,295.36
  4. Step 4: Simplify right side
    375,381.35x = 105,311,812,054.38
  5. Step 5: Solve for x
    x = 105,311,812,054.38/375,381.35
  6. Step 6: Final answer
    x = 280,546.20

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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.