Home / 513,265.86-769,899.18-139,288.86

Finding the Fourth Proportional to 513,265.86, 769,899.18 and 139,288.86

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Solution

The fourth proportional to 513,265.86, 769,899.18 and 139,288.86 is: 208,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,265.86 : 769,899.18 = 139,288.86 : x
  2. Step 2: Convert to fraction form
    513,265.86/769,899.18 = 139,288.86/x
  3. Step 3: Cross multiply
    513,265.86x = 769,899.18 × 139,288.86
  4. Step 4: Simplify right side
    513,265.86x = 107,238,379,097.14
  5. Step 5: Solve for x
    x = 107,238,379,097.14/513,265.86
  6. Step 6: Final answer
    x = 208,933.40

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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.