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Finding the Fourth Proportional to 640,145.16, 960,360.60 and 240,789.24

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Solution

The fourth proportional to 640,145.16, 960,360.60 and 240,789.24 is: 361,237.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,145.16 : 960,360.60 = 240,789.24 : x
  2. Step 2: Convert to fraction form
    640,145.16/960,360.60 = 240,789.24/x
  3. Step 3: Cross multiply
    640,145.16x = 960,360.60 × 240,789.24
  4. Step 4: Simplify right side
    640,145.16x = 231,244,498,999.94
  5. Step 5: Solve for x
    x = 231,244,498,999.94/640,145.16
  6. Step 6: Final answer
    x = 361,237.60

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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.