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Finding the Fourth Proportional to 640,153.12, 960,372.58 and 240,797.20

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Solution

The fourth proportional to 640,153.12, 960,372.58 and 240,797.20 is: 361,249.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,153.12 : 960,372.58 = 240,797.20 : x
  2. Step 2: Convert to fraction form
    640,153.12/960,372.58 = 240,797.20/x
  3. Step 3: Cross multiply
    640,153.12x = 960,372.58 × 240,797.20
  4. Step 4: Simplify right side
    640,153.12x = 231,255,028,220.78
  5. Step 5: Solve for x
    x = 231,255,028,220.78/640,153.12
  6. Step 6: Final answer
    x = 361,249.55

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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.