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Finding the Fourth Proportional to 253,398.77, 380,065.35 and 84,879.49

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Solution

The fourth proportional to 253,398.77, 380,065.35 and 84,879.49 is: 127,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,398.77 : 380,065.35 = 84,879.49 : x
  2. Step 2: Convert to fraction form
    253,398.77/380,065.35 = 84,879.49/x
  3. Step 3: Cross multiply
    253,398.77x = 380,065.35 × 84,879.49
  4. Step 4: Simplify right side
    253,398.77x = 32,259,753,074.67
  5. Step 5: Solve for x
    x = 32,259,753,074.67/253,398.77
  6. Step 6: Final answer
    x = 127,308.25

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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.