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Finding the Fourth Proportional to 354,597.75, 489,278.07 and 211,371.12

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Solution

The fourth proportional to 354,597.75, 489,278.07 and 211,371.12 is: 291,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,597.75 : 489,278.07 = 211,371.12 : x
  2. Step 2: Convert to fraction form
    354,597.75/489,278.07 = 211,371.12/x
  3. Step 3: Cross multiply
    354,597.75x = 489,278.07 × 211,371.12
  4. Step 4: Simplify right side
    354,597.75x = 103,419,253,647.34
  5. Step 5: Solve for x
    x = 103,419,253,647.34/354,597.75
  6. Step 6: Final answer
    x = 291,652.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.