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Finding the Fourth Proportional to 620,389.02, 930,648.23 and 171,109.97

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Solution

The fourth proportional to 620,389.02, 930,648.23 and 171,109.97 is: 256,682.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,389.02 : 930,648.23 = 171,109.97 : x
  2. Step 2: Convert to fraction form
    620,389.02/930,648.23 = 171,109.97/x
  3. Step 3: Cross multiply
    620,389.02x = 930,648.23 × 171,109.97
  4. Step 4: Simplify right side
    620,389.02x = 159,243,185,848.73
  5. Step 5: Solve for x
    x = 159,243,185,848.73/620,389.02
  6. Step 6: Final answer
    x = 256,682.79

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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.