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Finding the Fourth Proportional to 455,010.30, 682,515.45 and 202,290.30

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Solution

The fourth proportional to 455,010.30, 682,515.45 and 202,290.30 is: 303,435.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,010.30 : 682,515.45 = 202,290.30 : x
  2. Step 2: Convert to fraction form
    455,010.30/682,515.45 = 202,290.30/x
  3. Step 3: Cross multiply
    455,010.30x = 682,515.45 × 202,290.30
  4. Step 4: Simplify right side
    455,010.30x = 138,066,255,135.14
  5. Step 5: Solve for x
    x = 138,066,255,135.14/455,010.30
  6. Step 6: Final answer
    x = 303,435.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.