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Finding the Fourth Proportional to 393,869.80, 590,027.10 and 235,628.20

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Solution

The fourth proportional to 393,869.80, 590,027.10 and 235,628.20 is: 352,977.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,869.80 : 590,027.10 = 235,628.20 : x
  2. Step 2: Convert to fraction form
    393,869.80/590,027.10 = 235,628.20/x
  3. Step 3: Cross multiply
    393,869.80x = 590,027.10 × 235,628.20
  4. Step 4: Simplify right side
    393,869.80x = 139,027,023,524.22
  5. Step 5: Solve for x
    x = 139,027,023,524.22/393,869.80
  6. Step 6: Final answer
    x = 352,977.11

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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.