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Finding the Fourth Proportional to 321,547.90, 482,390.97 and 108,337

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Solution

The fourth proportional to 321,547.90, 482,390.97 and 108,337 is: 162,528.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,547.90 : 482,390.97 = 108,337 : x
  2. Step 2: Convert to fraction form
    321,547.90/482,390.97 = 108,337/x
  3. Step 3: Cross multiply
    321,547.90x = 482,390.97 × 108,337
  4. Step 4: Simplify right side
    321,547.90x = 52,260,790,516.89
  5. Step 5: Solve for x
    x = 52,260,790,516.89/321,547.90
  6. Step 6: Final answer
    x = 162,528.79

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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.