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Finding the Fourth Proportional to 331,987.77, 498,221.53 and 132,193.01

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Solution

The fourth proportional to 331,987.77, 498,221.53 and 132,193.01 is: 198,385.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,987.77 : 498,221.53 = 132,193.01 : x
  2. Step 2: Convert to fraction form
    331,987.77/498,221.53 = 132,193.01/x
  3. Step 3: Cross multiply
    331,987.77x = 498,221.53 × 132,193.01
  4. Step 4: Simplify right side
    331,987.77x = 65,861,403,697.51
  5. Step 5: Solve for x
    x = 65,861,403,697.51/331,987.77
  6. Step 6: Final answer
    x = 198,385.03

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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.