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Finding the Fourth Proportional to 455,083.50, 628,015.50 and 253,879.50

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Solution

The fourth proportional to 455,083.50, 628,015.50 and 253,879.50 is: 350,353.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,083.50 : 628,015.50 = 253,879.50 : x
  2. Step 2: Convert to fraction form
    455,083.50/628,015.50 = 253,879.50/x
  3. Step 3: Cross multiply
    455,083.50x = 628,015.50 × 253,879.50
  4. Step 4: Simplify right side
    455,083.50x = 159,440,261,132.25
  5. Step 5: Solve for x
    x = 159,440,261,132.25/455,083.50
  6. Step 6: Final answer
    x = 350,353.86

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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.