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Finding the Fourth Proportional to 325,332.60, 487,998.90 and 213,718.20

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Solution

The fourth proportional to 325,332.60, 487,998.90 and 213,718.20 is: 320,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,332.60 : 487,998.90 = 213,718.20 : x
  2. Step 2: Convert to fraction form
    325,332.60/487,998.90 = 213,718.20/x
  3. Step 3: Cross multiply
    325,332.60x = 487,998.90 × 213,718.20
  4. Step 4: Simplify right side
    325,332.60x = 104,294,246,509.98
  5. Step 5: Solve for x
    x = 104,294,246,509.98/325,332.60
  6. Step 6: Final answer
    x = 320,577.30

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Similar ratio
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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.