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Finding the Fourth Proportional to 420,851.44, 630,861.60 and 167,979.52

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Solution

The fourth proportional to 420,851.44, 630,861.60 and 167,979.52 is: 251,803.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,851.44 : 630,861.60 = 167,979.52 : x
  2. Step 2: Convert to fraction form
    420,851.44/630,861.60 = 167,979.52/x
  3. Step 3: Cross multiply
    420,851.44x = 630,861.60 × 167,979.52
  4. Step 4: Simplify right side
    420,851.44x = 105,971,828,754.43
  5. Step 5: Solve for x
    x = 105,971,828,754.43/420,851.44
  6. Step 6: Final answer
    x = 251,803.41

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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.