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Finding the Fourth Proportional to 283,255.68, 390,049.68 and 276,969.12

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Solution

The fourth proportional to 283,255.68, 390,049.68 and 276,969.12 is: 381,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,255.68 : 390,049.68 = 276,969.12 : x
  2. Step 2: Convert to fraction form
    283,255.68/390,049.68 = 276,969.12/x
  3. Step 3: Cross multiply
    283,255.68x = 390,049.68 × 276,969.12
  4. Step 4: Simplify right side
    283,255.68x = 108,031,716,625.88
  5. Step 5: Solve for x
    x = 108,031,716,625.88/283,255.68
  6. Step 6: Final answer
    x = 381,392.94

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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.