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Finding the Fourth Proportional to 608,781.62, 839,928.21 and 367,138.10

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Solution

The fourth proportional to 608,781.62, 839,928.21 and 367,138.10 is: 506,535.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,781.62 : 839,928.21 = 367,138.10 : x
  2. Step 2: Convert to fraction form
    608,781.62/839,928.21 = 367,138.10/x
  3. Step 3: Cross multiply
    608,781.62x = 839,928.21 × 367,138.10
  4. Step 4: Simplify right side
    608,781.62x = 308,369,647,155.80
  5. Step 5: Solve for x
    x = 308,369,647,155.80/608,781.62
  6. Step 6: Final answer
    x = 506,535.74

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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.