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Finding the Fourth Proportional to 303,488.30, 455,232.45 and 103,815.20

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Solution

The fourth proportional to 303,488.30, 455,232.45 and 103,815.20 is: 155,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,488.30 : 455,232.45 = 103,815.20 : x
  2. Step 2: Convert to fraction form
    303,488.30/455,232.45 = 103,815.20/x
  3. Step 3: Cross multiply
    303,488.30x = 455,232.45 × 103,815.20
  4. Step 4: Simplify right side
    303,488.30x = 47,260,047,843.24
  5. Step 5: Solve for x
    x = 47,260,047,843.24/303,488.30
  6. Step 6: Final answer
    x = 155,722.80

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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.