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Finding the Fourth Proportional to 640,560.37, 960,880.17 and 214,134.58

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Solution

The fourth proportional to 640,560.37, 960,880.17 and 214,134.58 is: 321,215.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,560.37 : 960,880.17 = 214,134.58 : x
  2. Step 2: Convert to fraction form
    640,560.37/960,880.17 = 214,134.58/x
  3. Step 3: Cross multiply
    640,560.37x = 960,880.17 × 214,134.58
  4. Step 4: Simplify right side
    640,560.37x = 205,757,671,633.28
  5. Step 5: Solve for x
    x = 205,757,671,633.28/640,560.37
  6. Step 6: Final answer
    x = 321,215.11

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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.