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Finding the Fourth Proportional to 303,555.15, 455,253.33 and 90,265.65

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Solution

The fourth proportional to 303,555.15, 455,253.33 and 90,265.65 is: 135,374.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,555.15 : 455,253.33 = 90,265.65 : x
  2. Step 2: Convert to fraction form
    303,555.15/455,253.33 = 90,265.65/x
  3. Step 3: Cross multiply
    303,555.15x = 455,253.33 × 90,265.65
  4. Step 4: Simplify right side
    303,555.15x = 41,093,737,747.11
  5. Step 5: Solve for x
    x = 41,093,737,747.11/303,555.15
  6. Step 6: Final answer
    x = 135,374.87

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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.