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Finding the Fourth Proportional to 399,311.49, 550,984.84 and 235,945.27

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Solution

The fourth proportional to 399,311.49, 550,984.84 and 235,945.27 is: 325,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,311.49 : 550,984.84 = 235,945.27 : x
  2. Step 2: Convert to fraction form
    399,311.49/550,984.84 = 235,945.27/x
  3. Step 3: Cross multiply
    399,311.49x = 550,984.84 × 235,945.27
  4. Step 4: Simplify right side
    399,311.49x = 130,002,266,839.71
  5. Step 5: Solve for x
    x = 130,002,266,839.71/399,311.49
  6. Step 6: Final answer
    x = 325,566.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.