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Finding the Fourth Proportional to 355,299.90, 490,341.82 and 202,344.56

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Solution

The fourth proportional to 355,299.90, 490,341.82 and 202,344.56 is: 279,251.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,299.90 : 490,341.82 = 202,344.56 : x
  2. Step 2: Convert to fraction form
    355,299.90/490,341.82 = 202,344.56/x
  3. Step 3: Cross multiply
    355,299.90x = 490,341.82 × 202,344.56
  4. Step 4: Simplify right side
    355,299.90x = 99,217,999,817.50
  5. Step 5: Solve for x
    x = 99,217,999,817.50/355,299.90
  6. Step 6: Final answer
    x = 279,251.41

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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.