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Finding the Fourth Proportional to 355,298.90, 490,340.44 and 202,343.56

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Solution

The fourth proportional to 355,298.90, 490,340.44 and 202,343.56 is: 279,250.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,298.90 : 490,340.44 = 202,343.56 : x
  2. Step 2: Convert to fraction form
    355,298.90/490,340.44 = 202,343.56/x
  3. Step 3: Cross multiply
    355,298.90x = 490,340.44 × 202,343.56
  4. Step 4: Simplify right side
    355,298.90x = 99,217,230,241.57
  5. Step 5: Solve for x
    x = 99,217,230,241.57/355,298.90
  6. Step 6: Final answer
    x = 279,250.03

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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.