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Finding the Fourth Proportional to 375,443.30, 518,109.11 and 203,357.39

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Solution

The fourth proportional to 375,443.30, 518,109.11 and 203,357.39 is: 280,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,443.30 : 518,109.11 = 203,357.39 : x
  2. Step 2: Convert to fraction form
    375,443.30/518,109.11 = 203,357.39/x
  3. Step 3: Cross multiply
    375,443.30x = 518,109.11 × 203,357.39
  4. Step 4: Simplify right side
    375,443.30x = 105,361,313,500.08
  5. Step 5: Solve for x
    x = 105,361,313,500.08/375,443.30
  6. Step 6: Final answer
    x = 280,631.76

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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.