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Finding the Fourth Proportional to 343,421.20, 514,891.80 and 203,107.60

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Solution

The fourth proportional to 343,421.20, 514,891.80 and 203,107.60 is: 304,519.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,421.20 : 514,891.80 = 203,107.60 : x
  2. Step 2: Convert to fraction form
    343,421.20/514,891.80 = 203,107.60/x
  3. Step 3: Cross multiply
    343,421.20x = 514,891.80 × 203,107.60
  4. Step 4: Simplify right side
    343,421.20x = 104,578,437,757.68
  5. Step 5: Solve for x
    x = 104,578,437,757.68/343,421.20
  6. Step 6: Final answer
    x = 304,519.46

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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.