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Finding the Fourth Proportional to 268,909.95, 403,383.41 and 88,995.05

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Solution

The fourth proportional to 268,909.95, 403,383.41 and 88,995.05 is: 133,498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,909.95 : 403,383.41 = 88,995.05 : x
  2. Step 2: Convert to fraction form
    268,909.95/403,383.41 = 88,995.05/x
  3. Step 3: Cross multiply
    268,909.95x = 403,383.41 × 88,995.05
  4. Step 4: Simplify right side
    268,909.95x = 35,899,126,742.12
  5. Step 5: Solve for x
    x = 35,899,126,742.12/268,909.95
  6. Step 6: Final answer
    x = 133,498.69

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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.