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Finding the Fourth Proportional to 355,401.62, 490,453.53 and 202,439.76

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Solution

The fourth proportional to 355,401.62, 490,453.53 and 202,439.76 is: 279,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,401.62 : 490,453.53 = 202,439.76 : x
  2. Step 2: Convert to fraction form
    355,401.62/490,453.53 = 202,439.76/x
  3. Step 3: Cross multiply
    355,401.62x = 490,453.53 × 202,439.76
  4. Step 4: Simplify right side
    355,401.62x = 99,287,293,444.73
  5. Step 5: Solve for x
    x = 99,287,293,444.73/355,401.62
  6. Step 6: Final answer
    x = 279,366.46

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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.