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Finding the Fourth Proportional to 321,969.10, 482,953.65 and 247,465.30

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Solution

The fourth proportional to 321,969.10, 482,953.65 and 247,465.30 is: 371,197.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,969.10 : 482,953.65 = 247,465.30 : x
  2. Step 2: Convert to fraction form
    321,969.10/482,953.65 = 247,465.30/x
  3. Step 3: Cross multiply
    321,969.10x = 482,953.65 × 247,465.30
  4. Step 4: Simplify right side
    321,969.10x = 119,514,269,883.35
  5. Step 5: Solve for x
    x = 119,514,269,883.35/321,969.10
  6. Step 6: Final answer
    x = 371,197.95

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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.