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Finding the Fourth Proportional to 640,118.16, 960,320.20 and 240,762.36

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Solution

The fourth proportional to 640,118.16, 960,320.20 and 240,762.36 is: 361,197.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,118.16 : 960,320.20 = 240,762.36 : x
  2. Step 2: Convert to fraction form
    640,118.16/960,320.20 = 240,762.36/x
  3. Step 3: Cross multiply
    640,118.16x = 960,320.20 × 240,762.36
  4. Step 4: Simplify right side
    640,118.16x = 231,208,957,707.67
  5. Step 5: Solve for x
    x = 231,208,957,707.67/640,118.16
  6. Step 6: Final answer
    x = 361,197.31

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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.