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Finding the Fourth Proportional to 303,143.90, 454,590.74 and 103,480.38

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Solution

The fourth proportional to 303,143.90, 454,590.74 and 103,480.38 is: 155,177.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,143.90 : 454,590.74 = 103,480.38 : x
  2. Step 2: Convert to fraction form
    303,143.90/454,590.74 = 103,480.38/x
  3. Step 3: Cross multiply
    303,143.90x = 454,590.74 × 103,480.38
  4. Step 4: Simplify right side
    303,143.90x = 47,041,222,002.28
  5. Step 5: Solve for x
    x = 47,041,222,002.28/303,143.90
  6. Step 6: Final answer
    x = 155,177.86

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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.