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Finding the Fourth Proportional to 210,992.56, 291,170.53 and 115,508.14

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Solution

The fourth proportional to 210,992.56, 291,170.53 and 115,508.14 is: 159,401.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,992.56 : 291,170.53 = 115,508.14 : x
  2. Step 2: Convert to fraction form
    210,992.56/291,170.53 = 115,508.14/x
  3. Step 3: Cross multiply
    210,992.56x = 291,170.53 × 115,508.14
  4. Step 4: Simplify right side
    210,992.56x = 33,632,567,397.41
  5. Step 5: Solve for x
    x = 33,632,567,397.41/210,992.56
  6. Step 6: Final answer
    x = 159,401.67

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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.