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Finding the Fourth Proportional to 640,309.44, 960,501.69 and 240,953.66

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Solution

The fourth proportional to 640,309.44, 960,501.69 and 240,953.66 is: 361,444.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,309.44 : 960,501.69 = 240,953.66 : x
  2. Step 2: Convert to fraction form
    640,309.44/960,501.69 = 240,953.66/x
  3. Step 3: Cross multiply
    640,309.44x = 960,501.69 × 240,953.66
  4. Step 4: Simplify right side
    640,309.44x = 231,436,392,839.18
  5. Step 5: Solve for x
    x = 231,436,392,839.18/640,309.44
  6. Step 6: Final answer
    x = 361,444.61

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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.