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Finding the Fourth Proportional to 303,426.41, 455,139.84 and 103,748.29

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Solution

The fourth proportional to 303,426.41, 455,139.84 and 103,748.29 is: 155,622.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,426.41 : 455,139.84 = 103,748.29 : x
  2. Step 2: Convert to fraction form
    303,426.41/455,139.84 = 103,748.29/x
  3. Step 3: Cross multiply
    303,426.41x = 455,139.84 × 103,748.29
  4. Step 4: Simplify right side
    303,426.41x = 47,219,981,046.87
  5. Step 5: Solve for x
    x = 47,219,981,046.87/303,426.41
  6. Step 6: Final answer
    x = 155,622.52

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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.