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Finding the Fourth Proportional to 426,992.58, 640,600.02 and 127,473.30

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Solution

The fourth proportional to 426,992.58, 640,600.02 and 127,473.30 is: 191,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,992.58 : 640,600.02 = 127,473.30 : x
  2. Step 2: Convert to fraction form
    426,992.58/640,600.02 = 127,473.30/x
  3. Step 3: Cross multiply
    426,992.58x = 640,600.02 × 127,473.30
  4. Step 4: Simplify right side
    426,992.58x = 81,659,398,529.47
  5. Step 5: Solve for x
    x = 81,659,398,529.47/426,992.58
  6. Step 6: Final answer
    x = 191,243.13

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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.