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Finding the Fourth Proportional to 303,640.47, 455,155.85 and 103,824.18

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Solution

The fourth proportional to 303,640.47, 455,155.85 and 103,824.18 is: 155,632.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,640.47 : 455,155.85 = 103,824.18 : x
  2. Step 2: Convert to fraction form
    303,640.47/455,155.85 = 103,824.18/x
  3. Step 3: Cross multiply
    303,640.47x = 455,155.85 × 103,824.18
  4. Step 4: Simplify right side
    303,640.47x = 47,256,182,379.33
  5. Step 5: Solve for x
    x = 47,256,182,379.33/303,640.47
  6. Step 6: Final answer
    x = 155,632.03

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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.