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Finding the Fourth Proportional to 321,774.60, 482,661.90 and 296,891.40

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Solution

The fourth proportional to 321,774.60, 482,661.90 and 296,891.40 is: 445,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,774.60 : 482,661.90 = 296,891.40 : x
  2. Step 2: Convert to fraction form
    321,774.60/482,661.90 = 296,891.40/x
  3. Step 3: Cross multiply
    321,774.60x = 482,661.90 × 296,891.40
  4. Step 4: Simplify right side
    321,774.60x = 143,298,167,217.66
  5. Step 5: Solve for x
    x = 143,298,167,217.66/321,774.60
  6. Step 6: Final answer
    x = 445,337.10

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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.