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Finding the Fourth Proportional to 303,545.93, 455,239.58 and 90,256.41

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Solution

The fourth proportional to 303,545.93, 455,239.58 and 90,256.41 is: 135,361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,545.93 : 455,239.58 = 90,256.41 : x
  2. Step 2: Convert to fraction form
    303,545.93/455,239.58 = 90,256.41/x
  3. Step 3: Cross multiply
    303,545.93x = 455,239.58 × 90,256.41
  4. Step 4: Simplify right side
    303,545.93x = 41,088,289,729.43
  5. Step 5: Solve for x
    x = 41,088,289,729.43/303,545.93
  6. Step 6: Final answer
    x = 135,361.03

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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.