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Finding the Fourth Proportional to 262,578.60, 394,062.30 and 104,920.20

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Solution

The fourth proportional to 262,578.60, 394,062.30 and 104,920.20 is: 157,457.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,578.60 : 394,062.30 = 104,920.20 : x
  2. Step 2: Convert to fraction form
    262,578.60/394,062.30 = 104,920.20/x
  3. Step 3: Cross multiply
    262,578.60x = 394,062.30 × 104,920.20
  4. Step 4: Simplify right side
    262,578.60x = 41,345,095,328.46
  5. Step 5: Solve for x
    x = 41,345,095,328.46/262,578.60
  6. Step 6: Final answer
    x = 157,457.98

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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.