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Finding the Fourth Proportional to 640,834.65, 961,306.65 and 167,519.25

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Solution

The fourth proportional to 640,834.65, 961,306.65 and 167,519.25 is: 251,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,834.65 : 961,306.65 = 167,519.25 : x
  2. Step 2: Convert to fraction form
    640,834.65/961,306.65 = 167,519.25/x
  3. Step 3: Cross multiply
    640,834.65x = 961,306.65 × 167,519.25
  4. Step 4: Simplify right side
    640,834.65x = 161,037,369,028.01
  5. Step 5: Solve for x
    x = 161,037,369,028.01/640,834.65
  6. Step 6: Final answer
    x = 251,293.17

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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.