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Finding the Fourth Proportional to 393,860.68, 590,741.71 and 109,572.55

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Solution

The fourth proportional to 393,860.68, 590,741.71 and 109,572.55 is: 164,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,860.68 : 590,741.71 = 109,572.55 : x
  2. Step 2: Convert to fraction form
    393,860.68/590,741.71 = 109,572.55/x
  3. Step 3: Cross multiply
    393,860.68x = 590,741.71 × 109,572.55
  4. Step 4: Simplify right side
    393,860.68x = 64,729,073,805.27
  5. Step 5: Solve for x
    x = 64,729,073,805.27/393,860.68
  6. Step 6: Final answer
    x = 164,345.10

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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.