Home / 268,856.13-403,284.20-81,867.63

Finding the Fourth Proportional to 268,856.13, 403,284.20 and 81,867.63

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Solution

The fourth proportional to 268,856.13, 403,284.20 and 81,867.63 is: 122,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,856.13 : 403,284.20 = 81,867.63 : x
  2. Step 2: Convert to fraction form
    268,856.13/403,284.20 = 81,867.63/x
  3. Step 3: Cross multiply
    268,856.13x = 403,284.20 × 81,867.63
  4. Step 4: Simplify right side
    268,856.13x = 33,015,921,670.45
  5. Step 5: Solve for x
    x = 33,015,921,670.45/268,856.13
  6. Step 6: Final answer
    x = 122,801.45

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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.