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Finding the Fourth Proportional to 377,515.90, 520,982.90 and 205,444.97

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Solution

The fourth proportional to 377,515.90, 520,982.90 and 205,444.97 is: 283,520.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,515.90 : 520,982.90 = 205,444.97 : x
  2. Step 2: Convert to fraction form
    377,515.90/520,982.90 = 205,444.97/x
  3. Step 3: Cross multiply
    377,515.90x = 520,982.90 × 205,444.97
  4. Step 4: Simplify right side
    377,515.90x = 107,033,312,628.87
  5. Step 5: Solve for x
    x = 107,033,312,628.87/377,515.90
  6. Step 6: Final answer
    x = 283,520.01

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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.