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Finding the Fourth Proportional to 486,809.92, 730,130.64 and 131,741.02

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Solution

The fourth proportional to 486,809.92, 730,130.64 and 131,741.02 is: 197,588.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,809.92 : 730,130.64 = 131,741.02 : x
  2. Step 2: Convert to fraction form
    486,809.92/730,130.64 = 131,741.02/x
  3. Step 3: Cross multiply
    486,809.92x = 730,130.64 × 131,741.02
  4. Step 4: Simplify right side
    486,809.92x = 96,188,155,246.85
  5. Step 5: Solve for x
    x = 96,188,155,246.85/486,809.92
  6. Step 6: Final answer
    x = 197,588.73

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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.