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Finding the Fourth Proportional to 455,443.75, 628,512.38 and 254,239.75

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Solution

The fourth proportional to 455,443.75, 628,512.38 and 254,239.75 is: 350,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,443.75 : 628,512.38 = 254,239.75 : x
  2. Step 2: Convert to fraction form
    455,443.75/628,512.38 = 254,239.75/x
  3. Step 3: Cross multiply
    455,443.75x = 628,512.38 × 254,239.75
  4. Step 4: Simplify right side
    455,443.75x = 159,792,830,363.11
  5. Step 5: Solve for x
    x = 159,792,830,363.11/455,443.75
  6. Step 6: Final answer
    x = 350,850.86

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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.