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Finding the Fourth Proportional to 243,600.21, 365,391.81 and 85,825.17

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Solution

The fourth proportional to 243,600.21, 365,391.81 and 85,825.17 is: 128,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,600.21 : 365,391.81 = 85,825.17 : x
  2. Step 2: Convert to fraction form
    243,600.21/365,391.81 = 85,825.17/x
  3. Step 3: Cross multiply
    243,600.21x = 365,391.81 × 85,825.17
  4. Step 4: Simplify right side
    243,600.21x = 31,359,814,209.86
  5. Step 5: Solve for x
    x = 31,359,814,209.86/243,600.21
  6. Step 6: Final answer
    x = 128,734.76

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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.