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Finding the Fourth Proportional to 262,929, 394,309.98 and 85,394.92

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Solution

The fourth proportional to 262,929, 394,309.98 and 85,394.92 is: 128,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,929 : 394,309.98 = 85,394.92 : x
  2. Step 2: Convert to fraction form
    262,929/394,309.98 = 85,394.92/x
  3. Step 3: Cross multiply
    262,929x = 394,309.98 × 85,394.92
  4. Step 4: Simplify right side
    262,929x = 33,672,069,197.30
  5. Step 5: Solve for x
    x = 33,672,069,197.30/262,929
  6. Step 6: Final answer
    x = 128,065.25

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1.5x scale

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.