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Finding the Fourth Proportional to 210,874.86, 291,011.49 and 115,383.60

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Solution

The fourth proportional to 210,874.86, 291,011.49 and 115,383.60 is: 159,231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,874.86 : 291,011.49 = 115,383.60 : x
  2. Step 2: Convert to fraction form
    210,874.86/291,011.49 = 115,383.60/x
  3. Step 3: Cross multiply
    210,874.86x = 291,011.49 × 115,383.60
  4. Step 4: Simplify right side
    210,874.86x = 33,577,953,357.56
  5. Step 5: Solve for x
    x = 33,577,953,357.56/210,874.86
  6. Step 6: Final answer
    x = 159,231.66

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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.