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Finding the Fourth Proportional to 215,077.76, 322,682.28 and 109,970.54

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Solution

The fourth proportional to 215,077.76, 322,682.28 and 109,970.54 is: 164,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,077.76 : 322,682.28 = 109,970.54 : x
  2. Step 2: Convert to fraction form
    215,077.76/322,682.28 = 109,970.54/x
  3. Step 3: Cross multiply
    215,077.76x = 322,682.28 × 109,970.54
  4. Step 4: Simplify right side
    215,077.76x = 35,485,544,580.03
  5. Step 5: Solve for x
    x = 35,485,544,580.03/215,077.76
  6. Step 6: Final answer
    x = 164,989.37

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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.