Home / 399,183.16-549,937.02-278,105.44

Finding the Fourth Proportional to 399,183.16, 549,937.02 and 278,105.44

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Solution

The fourth proportional to 399,183.16, 549,937.02 and 278,105.44 is: 383,133.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,183.16 : 549,937.02 = 278,105.44 : x
  2. Step 2: Convert to fraction form
    399,183.16/549,937.02 = 278,105.44/x
  3. Step 3: Cross multiply
    399,183.16x = 549,937.02 × 278,105.44
  4. Step 4: Simplify right side
    399,183.16x = 152,940,476,919.39
  5. Step 5: Solve for x
    x = 152,940,476,919.39/399,183.16
  6. Step 6: Final answer
    x = 383,133.59

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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.