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Finding the Fourth Proportional to 508,065.62, 701,161.72 and 281,711.12

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Solution

The fourth proportional to 508,065.62, 701,161.72 and 281,711.12 is: 388,778.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,065.62 : 701,161.72 = 281,711.12 : x
  2. Step 2: Convert to fraction form
    508,065.62/701,161.72 = 281,711.12/x
  3. Step 3: Cross multiply
    508,065.62x = 701,161.72 × 281,711.12
  4. Step 4: Simplify right side
    508,065.62x = 197,525,049,232.24
  5. Step 5: Solve for x
    x = 197,525,049,232.24/508,065.62
  6. Step 6: Final answer
    x = 388,778.62

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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.