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Finding the Fourth Proportional to 393,346.80, 590,004.84 and 112,863.96

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Solution

The fourth proportional to 393,346.80, 590,004.84 and 112,863.96 is: 169,291.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,346.80 : 590,004.84 = 112,863.96 : x
  2. Step 2: Convert to fraction form
    393,346.80/590,004.84 = 112,863.96/x
  3. Step 3: Cross multiply
    393,346.80x = 590,004.84 × 112,863.96
  4. Step 4: Simplify right side
    393,346.80x = 66,590,282,661.57
  5. Step 5: Solve for x
    x = 66,590,282,661.57/393,346.80
  6. Step 6: Final answer
    x = 169,291.53

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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.