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Finding the Fourth Proportional to 254,649.20, 381,986.76 and 94,689.68

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Solution

The fourth proportional to 254,649.20, 381,986.76 and 94,689.68 is: 142,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,649.20 : 381,986.76 = 94,689.68 : x
  2. Step 2: Convert to fraction form
    254,649.20/381,986.76 = 94,689.68/x
  3. Step 3: Cross multiply
    254,649.20x = 381,986.76 × 94,689.68
  4. Step 4: Simplify right side
    254,649.20x = 36,170,204,068.64
  5. Step 5: Solve for x
    x = 36,170,204,068.64/254,649.20
  6. Step 6: Final answer
    x = 142,039.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.