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Finding the Fourth Proportional to 341,544.40, 512,406.20 and 131,189.20

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Solution

The fourth proportional to 341,544.40, 512,406.20 and 131,189.20 is: 196,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,544.40 : 512,406.20 = 131,189.20 : x
  2. Step 2: Convert to fraction form
    341,544.40/512,406.20 = 131,189.20/x
  3. Step 3: Cross multiply
    341,544.40x = 512,406.20 × 131,189.20
  4. Step 4: Simplify right side
    341,544.40x = 67,222,159,453.04
  5. Step 5: Solve for x
    x = 67,222,159,453.04/341,544.40
  6. Step 6: Final answer
    x = 196,818.22

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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.