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Finding the Fourth Proportional to 262,917.01, 394,424.52 and 85,376.35

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Solution

The fourth proportional to 262,917.01, 394,424.52 and 85,376.35 is: 128,080.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,917.01 : 394,424.52 = 85,376.35 : x
  2. Step 2: Convert to fraction form
    262,917.01/394,424.52 = 85,376.35/x
  3. Step 3: Cross multiply
    262,917.01x = 394,424.52 × 85,376.35
  4. Step 4: Simplify right side
    262,917.01x = 33,674,525,868.10
  5. Step 5: Solve for x
    x = 33,674,525,868.10/262,917.01
  6. Step 6: Final answer
    x = 128,080.44

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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.