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Finding the Fourth Proportional to 303,813.80, 455,720.70 and 146,349.80

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Solution

The fourth proportional to 303,813.80, 455,720.70 and 146,349.80 is: 219,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,813.80 : 455,720.70 = 146,349.80 : x
  2. Step 2: Convert to fraction form
    303,813.80/455,720.70 = 146,349.80/x
  3. Step 3: Cross multiply
    303,813.80x = 455,720.70 × 146,349.80
  4. Step 4: Simplify right side
    303,813.80x = 66,694,633,300.86
  5. Step 5: Solve for x
    x = 66,694,633,300.86/303,813.80
  6. Step 6: Final answer
    x = 219,524.70

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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.