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Finding the Fourth Proportional to 262,710.75, 394,029.18 and 85,219.32

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Solution

The fourth proportional to 262,710.75, 394,029.18 and 85,219.32 is: 127,817.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,710.75 : 394,029.18 = 85,219.32 : x
  2. Step 2: Convert to fraction form
    262,710.75/394,029.18 = 85,219.32/x
  3. Step 3: Cross multiply
    262,710.75x = 394,029.18 × 85,219.32
  4. Step 4: Simplify right side
    262,710.75x = 33,578,898,779.76
  5. Step 5: Solve for x
    x = 33,578,898,779.76/262,710.75
  6. Step 6: Final answer
    x = 127,817.00

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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.