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Finding the Fourth Proportional to 323,649.52, 485,473.57 and 86,992.20

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Solution

The fourth proportional to 323,649.52, 485,473.57 and 86,992.20 is: 130,488.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,649.52 : 485,473.57 = 86,992.20 : x
  2. Step 2: Convert to fraction form
    323,649.52/485,473.57 = 86,992.20/x
  3. Step 3: Cross multiply
    323,649.52x = 485,473.57 × 86,992.20
  4. Step 4: Simplify right side
    323,649.52x = 42,232,413,896.15
  5. Step 5: Solve for x
    x = 42,232,413,896.15/323,649.52
  6. Step 6: Final answer
    x = 130,488.11

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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.