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Finding the Fourth Proportional to 420,016.56, 630,023.62 and 104,473.48

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Solution

The fourth proportional to 420,016.56, 630,023.62 and 104,473.48 is: 156,709.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,016.56 : 630,023.62 = 104,473.48 : x
  2. Step 2: Convert to fraction form
    420,016.56/630,023.62 = 104,473.48/x
  3. Step 3: Cross multiply
    420,016.56x = 630,023.62 × 104,473.48
  4. Step 4: Simplify right side
    420,016.56x = 65,820,760,063.60
  5. Step 5: Solve for x
    x = 65,820,760,063.60/420,016.56
  6. Step 6: Final answer
    x = 156,709.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.