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Finding the Fourth Proportional to 235,085, 352,626.78 and 85,325.08

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Solution

The fourth proportional to 235,085, 352,626.78 and 85,325.08 is: 127,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,085 : 352,626.78 = 85,325.08 : x
  2. Step 2: Convert to fraction form
    235,085/352,626.78 = 85,325.08/x
  3. Step 3: Cross multiply
    235,085x = 352,626.78 × 85,325.08
  4. Step 4: Simplify right side
    235,085x = 30,087,908,213.64
  5. Step 5: Solve for x
    x = 30,087,908,213.64/235,085
  6. Step 6: Final answer
    x = 127,987.36

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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.