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Finding the Fourth Proportional to 640,227.48, 960,344.64 and 190,944.72

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Solution

The fourth proportional to 640,227.48, 960,344.64 and 190,944.72 is: 286,418.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,227.48 : 960,344.64 = 190,944.72 : x
  2. Step 2: Convert to fraction form
    640,227.48/960,344.64 = 190,944.72/x
  3. Step 3: Cross multiply
    640,227.48x = 960,344.64 × 190,944.72
  4. Step 4: Simplify right side
    640,227.48x = 183,372,738,388.30
  5. Step 5: Solve for x
    x = 183,372,738,388.30/640,227.48
  6. Step 6: Final answer
    x = 286,418.10

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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.