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Finding the Fourth Proportional to 262,807.01, 394,302 and 82,920.21

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Solution

The fourth proportional to 262,807.01, 394,302 and 82,920.21 is: 124,409.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,807.01 : 394,302 = 82,920.21 : x
  2. Step 2: Convert to fraction form
    262,807.01/394,302 = 82,920.21/x
  3. Step 3: Cross multiply
    262,807.01x = 394,302 × 82,920.21
  4. Step 4: Simplify right side
    262,807.01x = 32,695,604,643.42
  5. Step 5: Solve for x
    x = 32,695,604,643.42/262,807.01
  6. Step 6: Final answer
    x = 124,409.18

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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.