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Finding the Fourth Proportional to 210,992.36, 291,168.42 and 115,497.32

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Solution

The fourth proportional to 210,992.36, 291,168.42 and 115,497.32 is: 159,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,992.36 : 291,168.42 = 115,497.32 : x
  2. Step 2: Convert to fraction form
    210,992.36/291,168.42 = 115,497.32/x
  3. Step 3: Cross multiply
    210,992.36x = 291,168.42 × 115,497.32
  4. Step 4: Simplify right side
    210,992.36x = 33,629,172,178.63
  5. Step 5: Solve for x
    x = 33,629,172,178.63/210,992.36
  6. Step 6: Final answer
    x = 159,385.73

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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.