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Finding the Fourth Proportional to 393,764.20, 590,937.90 and 260,600.20

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Solution

The fourth proportional to 393,764.20, 590,937.90 and 260,600.20 is: 391,093.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,764.20 : 590,937.90 = 260,600.20 : x
  2. Step 2: Convert to fraction form
    393,764.20/590,937.90 = 260,600.20/x
  3. Step 3: Cross multiply
    393,764.20x = 590,937.90 × 260,600.20
  4. Step 4: Simplify right side
    393,764.20x = 153,998,534,927.58
  5. Step 5: Solve for x
    x = 153,998,534,927.58/393,764.20
  6. Step 6: Final answer
    x = 391,093.29

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1.5x scale

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.