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Finding the Fourth Proportional to 355,227.18, 490,189.98 and 202,281

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Solution

The fourth proportional to 355,227.18, 490,189.98 and 202,281 is: 279,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,227.18 : 490,189.98 = 202,281 : x
  2. Step 2: Convert to fraction form
    355,227.18/490,189.98 = 202,281/x
  3. Step 3: Cross multiply
    355,227.18x = 490,189.98 × 202,281
  4. Step 4: Simplify right side
    355,227.18x = 99,156,119,344.38
  5. Step 5: Solve for x
    x = 99,156,119,344.38/355,227.18
  6. Step 6: Final answer
    x = 279,134.38

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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.