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Finding the Fourth Proportional to 303,953.73, 455,930.95 and 79,314

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Solution

The fourth proportional to 303,953.73, 455,930.95 and 79,314 is: 118,971.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,953.73 : 455,930.95 = 79,314 : x
  2. Step 2: Convert to fraction form
    303,953.73/455,930.95 = 79,314/x
  3. Step 3: Cross multiply
    303,953.73x = 455,930.95 × 79,314
  4. Step 4: Simplify right side
    303,953.73x = 36,161,707,368.30
  5. Step 5: Solve for x
    x = 36,161,707,368.30/303,953.73
  6. Step 6: Final answer
    x = 118,971.09

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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.