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Finding the Fourth Proportional to 254,012.60, 380,989.68 and 67,038.68

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Solution

The fourth proportional to 254,012.60, 380,989.68 and 67,038.68 is: 100,550.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,012.60 : 380,989.68 = 67,038.68 : x
  2. Step 2: Convert to fraction form
    254,012.60/380,989.68 = 67,038.68/x
  3. Step 3: Cross multiply
    254,012.60x = 380,989.68 × 67,038.68
  4. Step 4: Simplify right side
    254,012.60x = 25,541,045,240.82
  5. Step 5: Solve for x
    x = 25,541,045,240.82/254,012.60
  6. Step 6: Final answer
    x = 100,550.31

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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.