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Finding the Fourth Proportional to 303,604.64, 455,328.84 and 90,317.12

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Solution

The fourth proportional to 303,604.64, 455,328.84 and 90,317.12 is: 135,452.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,604.64 : 455,328.84 = 90,317.12 : x
  2. Step 2: Convert to fraction form
    303,604.64/455,328.84 = 90,317.12/x
  3. Step 3: Cross multiply
    303,604.64x = 455,328.84 × 90,317.12
  4. Step 4: Simplify right side
    303,604.64x = 41,123,989,481.74
  5. Step 5: Solve for x
    x = 41,123,989,481.74/303,604.64
  6. Step 6: Final answer
    x = 135,452.44

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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.