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Finding the Fourth Proportional to 508,107.78, 701,216.73 and 281,748.42

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Solution

The fourth proportional to 508,107.78, 701,216.73 and 281,748.42 is: 388,828.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,107.78 : 701,216.73 = 281,748.42 : x
  2. Step 2: Convert to fraction form
    508,107.78/701,216.73 = 281,748.42/x
  3. Step 3: Cross multiply
    508,107.78x = 701,216.73 × 281,748.42
  4. Step 4: Simplify right side
    508,107.78x = 197,566,705,755.07
  5. Step 5: Solve for x
    x = 197,566,705,755.07/508,107.78
  6. Step 6: Final answer
    x = 388,828.34

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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.