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Finding the Fourth Proportional to 325,217.96, 487,827.48 and 213,603.20

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Solution

The fourth proportional to 325,217.96, 487,827.48 and 213,603.20 is: 320,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,217.96 : 487,827.48 = 213,603.20 : x
  2. Step 2: Convert to fraction form
    325,217.96/487,827.48 = 213,603.20/x
  3. Step 3: Cross multiply
    325,217.96x = 487,827.48 × 213,603.20
  4. Step 4: Simplify right side
    325,217.96x = 104,201,510,775.94
  5. Step 5: Solve for x
    x = 104,201,510,775.94/325,217.96
  6. Step 6: Final answer
    x = 320,405.15

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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.