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Finding the Fourth Proportional to 393,690.70, 590,537.27 and 109,396.81

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Solution

The fourth proportional to 393,690.70, 590,537.27 and 109,396.81 is: 164,095.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,690.70 : 590,537.27 = 109,396.81 : x
  2. Step 2: Convert to fraction form
    393,690.70/590,537.27 = 109,396.81/x
  3. Step 3: Cross multiply
    393,690.70x = 590,537.27 × 109,396.81
  4. Step 4: Simplify right side
    393,690.70x = 64,602,893,524.11
  5. Step 5: Solve for x
    x = 64,602,893,524.11/393,690.70
  6. Step 6: Final answer
    x = 164,095.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.