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Finding the Fourth Proportional to 393,375.30, 590,646.15 and 235,911.30

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Solution

The fourth proportional to 393,375.30, 590,646.15 and 235,911.30 is: 354,216.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,375.30 : 590,646.15 = 235,911.30 : x
  2. Step 2: Convert to fraction form
    393,375.30/590,646.15 = 235,911.30/x
  3. Step 3: Cross multiply
    393,375.30x = 590,646.15 × 235,911.30
  4. Step 4: Simplify right side
    393,375.30x = 139,340,101,086.50
  5. Step 5: Solve for x
    x = 139,340,101,086.50/393,375.30
  6. Step 6: Final answer
    x = 354,216.70

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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.