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Finding the Fourth Proportional to 393,314.80, 590,279.40 and 182,978.80

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Solution

The fourth proportional to 393,314.80, 590,279.40 and 182,978.80 is: 274,611.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,314.80 : 590,279.40 = 182,978.80 : x
  2. Step 2: Convert to fraction form
    393,314.80/590,279.40 = 182,978.80/x
  3. Step 3: Cross multiply
    393,314.80x = 590,279.40 × 182,978.80
  4. Step 4: Simplify right side
    393,314.80x = 108,008,616,276.72
  5. Step 5: Solve for x
    x = 108,008,616,276.72/393,314.80
  6. Step 6: Final answer
    x = 274,611.12

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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.