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Finding the Fourth Proportional to 303,975.60, 455,920.20 and 104,305.20

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Solution

The fourth proportional to 303,975.60, 455,920.20 and 104,305.20 is: 156,442.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,975.60 : 455,920.20 = 104,305.20 : x
  2. Step 2: Convert to fraction form
    303,975.60/455,920.20 = 104,305.20/x
  3. Step 3: Cross multiply
    303,975.60x = 455,920.20 × 104,305.20
  4. Step 4: Simplify right side
    303,975.60x = 47,554,847,645.04
  5. Step 5: Solve for x
    x = 47,554,847,645.04/303,975.60
  6. Step 6: Final answer
    x = 156,442.98

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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.