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Finding the Fourth Proportional to 355,174.80, 490,027.50 and 253,216.86

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Solution

The fourth proportional to 355,174.80, 490,027.50 and 253,216.86 is: 349,358.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,174.80 : 490,027.50 = 253,216.86 : x
  2. Step 2: Convert to fraction form
    355,174.80/490,027.50 = 253,216.86/x
  3. Step 3: Cross multiply
    355,174.80x = 490,027.50 × 253,216.86
  4. Step 4: Simplify right side
    355,174.80x = 124,083,224,863.65
  5. Step 5: Solve for x
    x = 124,083,224,863.65/355,174.80
  6. Step 6: Final answer
    x = 349,358.19

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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.