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Finding the Fourth Proportional to 420,596.66, 630,891.48 and 105,051.44

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Solution

The fourth proportional to 420,596.66, 630,891.48 and 105,051.44 is: 157,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,596.66 : 630,891.48 = 105,051.44 : x
  2. Step 2: Convert to fraction form
    420,596.66/630,891.48 = 105,051.44/x
  3. Step 3: Cross multiply
    420,596.66x = 630,891.48 × 105,051.44
  4. Step 4: Simplify right side
    420,596.66x = 66,276,058,457.73
  5. Step 5: Solve for x
    x = 66,276,058,457.73/420,596.66
  6. Step 6: Final answer
    x = 157,576.28

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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.