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Finding the Fourth Proportional to 518,729.77, 778,162.70 and 203,145.67

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Solution

The fourth proportional to 518,729.77, 778,162.70 and 203,145.67 is: 304,745.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,729.77 : 778,162.70 = 203,145.67 : x
  2. Step 2: Convert to fraction form
    518,729.77/778,162.70 = 203,145.67/x
  3. Step 3: Cross multiply
    518,729.77x = 778,162.70 × 203,145.67
  4. Step 4: Simplify right side
    518,729.77x = 158,080,383,398.38
  5. Step 5: Solve for x
    x = 158,080,383,398.38/518,729.77
  6. Step 6: Final answer
    x = 304,745.15

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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.