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Finding the Fourth Proportional to 455,020.56, 627,945.48 and 253,855.44

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Solution

The fourth proportional to 455,020.56, 627,945.48 and 253,855.44 is: 350,330.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,020.56 : 627,945.48 = 253,855.44 : x
  2. Step 2: Convert to fraction form
    455,020.56/627,945.48 = 253,855.44/x
  3. Step 3: Cross multiply
    455,020.56x = 627,945.48 × 253,855.44
  4. Step 4: Simplify right side
    455,020.56x = 159,407,376,121.41
  5. Step 5: Solve for x
    x = 159,407,376,121.41/455,020.56
  6. Step 6: Final answer
    x = 350,330.05

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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.