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Finding the Fourth Proportional to 287,501.87, 396,483.48 and 227,216.54

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Solution

The fourth proportional to 287,501.87, 396,483.48 and 227,216.54 is: 313,346.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,501.87 : 396,483.48 = 227,216.54 : x
  2. Step 2: Convert to fraction form
    287,501.87/396,483.48 = 227,216.54/x
  3. Step 3: Cross multiply
    287,501.87x = 396,483.48 × 227,216.54
  4. Step 4: Simplify right side
    287,501.87x = 90,087,603,997.15
  5. Step 5: Solve for x
    x = 90,087,603,997.15/287,501.87
  6. Step 6: Final answer
    x = 313,346.15

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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.