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Finding the Fourth Proportional to 386,410.50, 533,246.49 and 225,272.34

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Solution

The fourth proportional to 386,410.50, 533,246.49 and 225,272.34 is: 310,875.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,410.50 : 533,246.49 = 225,272.34 : x
  2. Step 2: Convert to fraction form
    386,410.50/533,246.49 = 225,272.34/x
  3. Step 3: Cross multiply
    386,410.50x = 533,246.49 × 225,272.34
  4. Step 4: Simplify right side
    386,410.50x = 120,125,684,599.09
  5. Step 5: Solve for x
    x = 120,125,684,599.09/386,410.50
  6. Step 6: Final answer
    x = 310,875.83

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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.