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Finding the Fourth Proportional to 341,809.40, 512,803.70 and 131,454.20

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Solution

The fourth proportional to 341,809.40, 512,803.70 and 131,454.20 is: 197,215.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,809.40 : 512,803.70 = 131,454.20 : x
  2. Step 2: Convert to fraction form
    341,809.40/512,803.70 = 131,454.20/x
  3. Step 3: Cross multiply
    341,809.40x = 512,803.70 × 131,454.20
  4. Step 4: Simplify right side
    341,809.40x = 67,410,200,140.54
  5. Step 5: Solve for x
    x = 67,410,200,140.54/341,809.40
  6. Step 6: Final answer
    x = 197,215.76

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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.