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Finding the Fourth Proportional to 420,597.66, 630,892.98 and 105,052.44

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Solution

The fourth proportional to 420,597.66, 630,892.98 and 105,052.44 is: 157,577.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,597.66 : 630,892.98 = 105,052.44 : x
  2. Step 2: Convert to fraction form
    420,597.66/630,892.98 = 105,052.44/x
  3. Step 3: Cross multiply
    420,597.66x = 630,892.98 × 105,052.44
  4. Step 4: Simplify right side
    420,597.66x = 66,276,846,927.87
  5. Step 5: Solve for x
    x = 66,276,846,927.87/420,597.66
  6. Step 6: Final answer
    x = 157,577.78

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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.