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Finding the Fourth Proportional to 268,276.28, 402,164.28 and 90,659.08

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Solution

The fourth proportional to 268,276.28, 402,164.28 and 90,659.08 is: 135,904.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,276.28 : 402,164.28 = 90,659.08 : x
  2. Step 2: Convert to fraction form
    268,276.28/402,164.28 = 90,659.08/x
  3. Step 3: Cross multiply
    268,276.28x = 402,164.28 × 90,659.08
  4. Step 4: Simplify right side
    268,276.28x = 36,459,843,633.66
  5. Step 5: Solve for x
    x = 36,459,843,633.66/268,276.28
  6. Step 6: Final answer
    x = 135,904.09

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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.