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Finding the Fourth Proportional to 303,463.50, 455,195.21 and 90,230.55

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Solution

The fourth proportional to 303,463.50, 455,195.21 and 90,230.55 is: 135,345.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,463.50 : 455,195.21 = 90,230.55 : x
  2. Step 2: Convert to fraction form
    303,463.50/455,195.21 = 90,230.55/x
  3. Step 3: Cross multiply
    303,463.50x = 455,195.21 × 90,230.55
  4. Step 4: Simplify right side
    303,463.50x = 41,072,513,704.51
  5. Step 5: Solve for x
    x = 41,072,513,704.51/303,463.50
  6. Step 6: Final answer
    x = 135,345.81

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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.