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Finding the Fourth Proportional to 640,568.04, 960,891.62 and 214,142.19

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Solution

The fourth proportional to 640,568.04, 960,891.62 and 214,142.19 is: 321,226.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,568.04 : 960,891.62 = 214,142.19 : x
  2. Step 2: Convert to fraction form
    640,568.04/960,891.62 = 214,142.19/x
  3. Step 3: Cross multiply
    640,568.04x = 960,891.62 × 214,142.19
  4. Step 4: Simplify right side
    640,568.04x = 205,767,435,859.45
  5. Step 5: Solve for x
    x = 205,767,435,859.45/640,568.04
  6. Step 6: Final answer
    x = 321,226.51

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1.5x scale

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.