Home / 355,243.17-490,221-194,103.75

Finding the Fourth Proportional to 355,243.17, 490,221 and 194,103.75

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Solution

The fourth proportional to 355,243.17, 490,221 and 194,103.75 is: 267,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,243.17 : 490,221 = 194,103.75 : x
  2. Step 2: Convert to fraction form
    355,243.17/490,221 = 194,103.75/x
  3. Step 3: Cross multiply
    355,243.17x = 490,221 × 194,103.75
  4. Step 4: Simplify right side
    355,243.17x = 95,153,734,428.75
  5. Step 5: Solve for x
    x = 95,153,734,428.75/355,243.17
  6. Step 6: Final answer
    x = 267,855.21

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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.