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Finding the Fourth Proportional to 217,278.60, 325,903.63 and 75,090.80

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Solution

The fourth proportional to 217,278.60, 325,903.63 and 75,090.80 is: 112,631.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,278.60 : 325,903.63 = 75,090.80 : x
  2. Step 2: Convert to fraction form
    217,278.60/325,903.63 = 75,090.80/x
  3. Step 3: Cross multiply
    217,278.60x = 325,903.63 × 75,090.80
  4. Step 4: Simplify right side
    217,278.60x = 24,472,363,023.03
  5. Step 5: Solve for x
    x = 24,472,363,023.03/217,278.60
  6. Step 6: Final answer
    x = 112,631.26

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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.