Home / 355,887.20-491,120.16-194,740.40

Finding the Fourth Proportional to 355,887.20, 491,120.16 and 194,740.40

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Solution

The fourth proportional to 355,887.20, 491,120.16 and 194,740.40 is: 268,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,887.20 : 491,120.16 = 194,740.40 : x
  2. Step 2: Convert to fraction form
    355,887.20/491,120.16 = 194,740.40/x
  3. Step 3: Cross multiply
    355,887.20x = 491,120.16 × 194,740.40
  4. Step 4: Simplify right side
    355,887.20x = 95,640,936,406.46
  5. Step 5: Solve for x
    x = 95,640,936,406.46/355,887.20
  6. Step 6: Final answer
    x = 268,739.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.