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Finding the Fourth Proportional to 331,378.20, 497,132.10 and 141,838.20

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Solution

The fourth proportional to 331,378.20, 497,132.10 and 141,838.20 is: 212,785.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,378.20 : 497,132.10 = 141,838.20 : x
  2. Step 2: Convert to fraction form
    331,378.20/497,132.10 = 141,838.20/x
  3. Step 3: Cross multiply
    331,378.20x = 497,132.10 × 141,838.20
  4. Step 4: Simplify right side
    331,378.20x = 70,512,322,226.22
  5. Step 5: Solve for x
    x = 70,512,322,226.22/331,378.20
  6. Step 6: Final answer
    x = 212,785.04

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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.