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Finding the Fourth Proportional to 210,873.39, 291,005.10 and 115,380.48

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Solution

The fourth proportional to 210,873.39, 291,005.10 and 115,380.48 is: 159,224.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,873.39 : 291,005.10 = 115,380.48 : x
  2. Step 2: Convert to fraction form
    210,873.39/291,005.10 = 115,380.48/x
  3. Step 3: Cross multiply
    210,873.39x = 291,005.10 × 115,380.48
  4. Step 4: Simplify right side
    210,873.39x = 33,576,308,120.45
  5. Step 5: Solve for x
    x = 33,576,308,120.45/210,873.39
  6. Step 6: Final answer
    x = 159,224.96

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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.