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Finding the Fourth Proportional to 349,879.20, 524,041.20 and 287,671.20

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Solution

The fourth proportional to 349,879.20, 524,041.20 and 287,671.20 is: 430,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,879.20 : 524,041.20 = 287,671.20 : x
  2. Step 2: Convert to fraction form
    349,879.20/524,041.20 = 287,671.20/x
  3. Step 3: Cross multiply
    349,879.20x = 524,041.20 × 287,671.20
  4. Step 4: Simplify right side
    349,879.20x = 150,751,560,853.44
  5. Step 5: Solve for x
    x = 150,751,560,853.44/349,879.20
  6. Step 6: Final answer
    x = 430,867.46

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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.