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Finding the Fourth Proportional to 249,876, 374,852.97 and 81,356.54

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Solution

The fourth proportional to 249,876, 374,852.97 and 81,356.54 is: 122,047.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,876 : 374,852.97 = 81,356.54 : x
  2. Step 2: Convert to fraction form
    249,876/374,852.97 = 81,356.54/x
  3. Step 3: Cross multiply
    249,876x = 374,852.97 × 81,356.54
  4. Step 4: Simplify right side
    249,876x = 30,496,738,773.66
  5. Step 5: Solve for x
    x = 30,496,738,773.66/249,876
  6. Step 6: Final answer
    x = 122,047.49

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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.