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Finding the Fourth Proportional to 665,078.31, 997,765.02 and 191,726.73

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Solution

The fourth proportional to 665,078.31, 997,765.02 and 191,726.73 is: 287,632.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,078.31 : 997,765.02 = 191,726.73 : x
  2. Step 2: Convert to fraction form
    665,078.31/997,765.02 = 191,726.73/x
  3. Step 3: Cross multiply
    665,078.31x = 997,765.02 × 191,726.73
  4. Step 4: Simplify right side
    665,078.31x = 191,298,224,592.99
  5. Step 5: Solve for x
    x = 191,298,224,592.99/665,078.31
  6. Step 6: Final answer
    x = 287,632.63

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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.