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Finding the Fourth Proportional to 370,126.86, 511,635.90 and 330,235.98

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Solution

The fourth proportional to 370,126.86, 511,635.90 and 330,235.98 is: 456,493.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,126.86 : 511,635.90 = 330,235.98 : x
  2. Step 2: Convert to fraction form
    370,126.86/511,635.90 = 330,235.98/x
  3. Step 3: Cross multiply
    370,126.86x = 511,635.90 × 330,235.98
  4. Step 4: Simplify right side
    370,126.86x = 168,960,582,839.68
  5. Step 5: Solve for x
    x = 168,960,582,839.68/370,126.86
  6. Step 6: Final answer
    x = 456,493.71

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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.