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Finding the Fourth Proportional to 479,538.86, 719,443.16 and 209,690.73

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Solution

The fourth proportional to 479,538.86, 719,443.16 and 209,690.73 is: 314,595.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,538.86 : 719,443.16 = 209,690.73 : x
  2. Step 2: Convert to fraction form
    479,538.86/719,443.16 = 209,690.73/x
  3. Step 3: Cross multiply
    479,538.86x = 719,443.16 × 209,690.73
  4. Step 4: Simplify right side
    479,538.86x = 150,860,560,365.45
  5. Step 5: Solve for x
    x = 150,860,560,365.45/479,538.86
  6. Step 6: Final answer
    x = 314,595.07

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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.