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Finding the Fourth Proportional to 355,297.90, 490,339.06 and 202,342.56

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Solution

The fourth proportional to 355,297.90, 490,339.06 and 202,342.56 is: 279,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,297.90 : 490,339.06 = 202,342.56 : x
  2. Step 2: Convert to fraction form
    355,297.90/490,339.06 = 202,342.56/x
  3. Step 3: Cross multiply
    355,297.90x = 490,339.06 × 202,342.56
  4. Step 4: Simplify right side
    355,297.90x = 99,216,460,668.39
  5. Step 5: Solve for x
    x = 99,216,460,668.39/355,297.90
  6. Step 6: Final answer
    x = 279,248.65

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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.