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Finding the Fourth Proportional to 355,920.62, 490,659.63 and 253,768.88

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Solution

The fourth proportional to 355,920.62, 490,659.63 and 253,768.88 is: 349,836.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,920.62 : 490,659.63 = 253,768.88 : x
  2. Step 2: Convert to fraction form
    355,920.62/490,659.63 = 253,768.88/x
  3. Step 3: Cross multiply
    355,920.62x = 490,659.63 × 253,768.88
  4. Step 4: Simplify right side
    355,920.62x = 124,514,145,041.33
  5. Step 5: Solve for x
    x = 124,514,145,041.33/355,920.62
  6. Step 6: Final answer
    x = 349,836.85

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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.