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Finding the Fourth Proportional to 355,168.80, 490,019.22 and 253,210.86

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Solution

The fourth proportional to 355,168.80, 490,019.22 and 253,210.86 is: 349,349.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,168.80 : 490,019.22 = 253,210.86 : x
  2. Step 2: Convert to fraction form
    355,168.80/490,019.22 = 253,210.86/x
  3. Step 3: Cross multiply
    355,168.80x = 490,019.22 × 253,210.86
  4. Step 4: Simplify right side
    355,168.80x = 124,078,188,112.73
  5. Step 5: Solve for x
    x = 124,078,188,112.73/355,168.80
  6. Step 6: Final answer
    x = 349,349.91

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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.