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Finding the Fourth Proportional to 281,805.18, 388,949.85 and 259,108.27

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Solution

The fourth proportional to 281,805.18, 388,949.85 and 259,108.27 is: 357,623.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,805.18 : 388,949.85 = 259,108.27 : x
  2. Step 2: Convert to fraction form
    281,805.18/388,949.85 = 259,108.27/x
  3. Step 3: Cross multiply
    281,805.18x = 388,949.85 × 259,108.27
  4. Step 4: Simplify right side
    281,805.18x = 100,780,121,777.89
  5. Step 5: Solve for x
    x = 100,780,121,777.89/281,805.18
  6. Step 6: Final answer
    x = 357,623.39

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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.