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Finding the Fourth Proportional to 323,986.19, 486,196.20 and 134,446.74

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Solution

The fourth proportional to 323,986.19, 486,196.20 and 134,446.74 is: 201,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,986.19 : 486,196.20 = 134,446.74 : x
  2. Step 2: Convert to fraction form
    323,986.19/486,196.20 = 134,446.74/x
  3. Step 3: Cross multiply
    323,986.19x = 486,196.20 × 134,446.74
  4. Step 4: Simplify right side
    323,986.19x = 65,367,492,739.82
  5. Step 5: Solve for x
    x = 65,367,492,739.82/323,986.19
  6. Step 6: Final answer
    x = 201,760.12

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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.