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Finding the Fourth Proportional to 274,353.47, 378,642.56 and 166,917.09

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Solution

The fourth proportional to 274,353.47, 378,642.56 and 166,917.09 is: 230,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,353.47 : 378,642.56 = 166,917.09 : x
  2. Step 2: Convert to fraction form
    274,353.47/378,642.56 = 166,917.09/x
  3. Step 3: Cross multiply
    274,353.47x = 378,642.56 × 166,917.09
  4. Step 4: Simplify right side
    274,353.47x = 63,201,913,430.77
  5. Step 5: Solve for x
    x = 63,201,913,430.77/274,353.47
  6. Step 6: Final answer
    x = 230,366.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.