Home / 399,181.16-549,934.26-278,103.44

Finding the Fourth Proportional to 399,181.16, 549,934.26 and 278,103.44

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Solution

The fourth proportional to 399,181.16, 549,934.26 and 278,103.44 is: 383,130.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,181.16 : 549,934.26 = 278,103.44 : x
  2. Step 2: Convert to fraction form
    399,181.16/549,934.26 = 278,103.44/x
  3. Step 3: Cross multiply
    399,181.16x = 549,934.26 × 278,103.44
  4. Step 4: Simplify right side
    399,181.16x = 152,938,609,479.85
  5. Step 5: Solve for x
    x = 152,938,609,479.85/399,181.16
  6. Step 6: Final answer
    x = 383,130.83

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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.