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Finding the Fourth Proportional to 508,109.72, 701,191.42 and 281,755.22

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Solution

The fourth proportional to 508,109.72, 701,191.42 and 281,755.22 is: 388,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,109.72 : 701,191.42 = 281,755.22 : x
  2. Step 2: Convert to fraction form
    508,109.72/701,191.42 = 281,755.22/x
  3. Step 3: Cross multiply
    508,109.72x = 701,191.42 × 281,755.22
  4. Step 4: Simplify right side
    508,109.72x = 197,564,342,804.21
  5. Step 5: Solve for x
    x = 197,564,342,804.21/508,109.72
  6. Step 6: Final answer
    x = 388,822.21

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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.