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Finding the Fourth Proportional to 303,455.40, 455,243.85 and 90,222.90

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Solution

The fourth proportional to 303,455.40, 455,243.85 and 90,222.90 is: 135,352.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,455.40 : 455,243.85 = 90,222.90 : x
  2. Step 2: Convert to fraction form
    303,455.40/455,243.85 = 90,222.90/x
  3. Step 3: Cross multiply
    303,455.40x = 455,243.85 × 90,222.90
  4. Step 4: Simplify right side
    303,455.40x = 41,073,420,354.17
  5. Step 5: Solve for x
    x = 41,073,420,354.17/303,455.40
  6. Step 6: Final answer
    x = 135,352.41

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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.