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Finding the Fourth Proportional to 325,216.96, 487,825.98 and 213,602.20

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Solution

The fourth proportional to 325,216.96, 487,825.98 and 213,602.20 is: 320,403.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,216.96 : 487,825.98 = 213,602.20 : x
  2. Step 2: Convert to fraction form
    325,216.96/487,825.98 = 213,602.20/x
  3. Step 3: Cross multiply
    325,216.96x = 487,825.98 × 213,602.20
  4. Step 4: Simplify right side
    325,216.96x = 104,200,702,545.16
  5. Step 5: Solve for x
    x = 104,200,702,545.16/325,216.96
  6. Step 6: Final answer
    x = 320,403.65

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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.