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Finding the Fourth Proportional to 253,449.48, 380,258.64 and 84,986.44

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Solution

The fourth proportional to 253,449.48, 380,258.64 and 84,986.44 is: 127,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,449.48 : 380,258.64 = 84,986.44 : x
  2. Step 2: Convert to fraction form
    253,449.48/380,258.64 = 84,986.44/x
  3. Step 3: Cross multiply
    253,449.48x = 380,258.64 × 84,986.44
  4. Step 4: Simplify right side
    253,449.48x = 32,316,828,092.84
  5. Step 5: Solve for x
    x = 32,316,828,092.84/253,449.48
  6. Step 6: Final answer
    x = 127,507.97

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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.