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Finding the Fourth Proportional to 455,243.78, 628,234.23 and 251,292.92

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Solution

The fourth proportional to 455,243.78, 628,234.23 and 251,292.92 is: 346,783.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,243.78 : 628,234.23 = 251,292.92 : x
  2. Step 2: Convert to fraction form
    455,243.78/628,234.23 = 251,292.92/x
  3. Step 3: Cross multiply
    455,243.78x = 628,234.23 × 251,292.92
  4. Step 4: Simplify right side
    455,243.78x = 157,870,813,472.42
  5. Step 5: Solve for x
    x = 157,870,813,472.42/455,243.78
  6. Step 6: Final answer
    x = 346,783.02

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Double scale
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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.