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Finding the Fourth Proportional to 640,134.24, 960,250.37 and 190,820.76

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Solution

The fourth proportional to 640,134.24, 960,250.37 and 190,820.76 is: 286,245.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,134.24 : 960,250.37 = 190,820.76 : x
  2. Step 2: Convert to fraction form
    640,134.24/960,250.37 = 190,820.76/x
  3. Step 3: Cross multiply
    640,134.24x = 960,250.37 × 190,820.76
  4. Step 4: Simplify right side
    640,134.24x = 183,235,705,393.68
  5. Step 5: Solve for x
    x = 183,235,705,393.68/640,134.24
  6. Step 6: Final answer
    x = 286,245.75

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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.