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Finding the Fourth Proportional to 640,286.71, 960,467.65 and 240,930.93

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Solution

The fourth proportional to 640,286.71, 960,467.65 and 240,930.93 is: 361,410.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,286.71 : 960,467.65 = 240,930.93 : x
  2. Step 2: Convert to fraction form
    640,286.71/960,467.65 = 240,930.93/x
  3. Step 3: Cross multiply
    640,286.71x = 960,467.65 × 240,930.93
  4. Step 4: Simplify right side
    640,286.71x = 231,406,367,148.84
  5. Step 5: Solve for x
    x = 231,406,367,148.84/640,286.71
  6. Step 6: Final answer
    x = 361,410.54

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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.