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Finding the Fourth Proportional to 303,425.20, 455,191.20 and 103,698.64

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Solution

The fourth proportional to 303,425.20, 455,191.20 and 103,698.64 is: 155,566.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,425.20 : 455,191.20 = 103,698.64 : x
  2. Step 2: Convert to fraction form
    303,425.20/455,191.20 = 103,698.64/x
  3. Step 3: Cross multiply
    303,425.20x = 455,191.20 × 103,698.64
  4. Step 4: Simplify right side
    303,425.20x = 47,202,708,379.97
  5. Step 5: Solve for x
    x = 47,202,708,379.97/303,425.20
  6. Step 6: Final answer
    x = 155,566.21

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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.