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Finding the Fourth Proportional to 640,254.24, 960,765.78 and 255,934.45

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Solution

The fourth proportional to 640,254.24, 960,765.78 and 255,934.45 is: 384,055.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,254.24 : 960,765.78 = 255,934.45 : x
  2. Step 2: Convert to fraction form
    640,254.24/960,765.78 = 255,934.45/x
  3. Step 3: Cross multiply
    640,254.24x = 960,765.78 × 255,934.45
  4. Step 4: Simplify right side
    640,254.24x = 245,893,056,679.29
  5. Step 5: Solve for x
    x = 245,893,056,679.29/640,254.24
  6. Step 6: Final answer
    x = 384,055.34

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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.