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Finding the Fourth Proportional to 640,287.26, 960,468.49 and 240,931.50

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Solution

The fourth proportional to 640,287.26, 960,468.49 and 240,931.50 is: 361,411.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,287.26 : 960,468.49 = 240,931.50 : x
  2. Step 2: Convert to fraction form
    640,287.26/960,468.49 = 240,931.50/x
  3. Step 3: Cross multiply
    640,287.26x = 960,468.49 × 240,931.50
  4. Step 4: Simplify right side
    640,287.26x = 231,407,109,342.60
  5. Step 5: Solve for x
    x = 231,407,109,342.60/640,287.26
  6. Step 6: Final answer
    x = 361,411.39

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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.