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Finding the Fourth Proportional to 262,887.40, 394,468.80 and 120,775.60

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Solution

The fourth proportional to 262,887.40, 394,468.80 and 120,775.60 is: 181,226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,887.40 : 394,468.80 = 120,775.60 : x
  2. Step 2: Convert to fraction form
    262,887.40/394,468.80 = 120,775.60/x
  3. Step 3: Cross multiply
    262,887.40x = 394,468.80 × 120,775.60
  4. Step 4: Simplify right side
    262,887.40x = 47,642,206,001.28
  5. Step 5: Solve for x
    x = 47,642,206,001.28/262,887.40
  6. Step 6: Final answer
    x = 181,226.66

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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.