Home / 289,288,613.98-398,987,295.51-190,271,012.86

Finding the Fourth Proportional to 289,288,613.98, 398,987,295.51 and 190,271,012.86

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Solution

The fourth proportional to 289,288,613.98, 398,987,295.51 and 190,271,012.86 is: 262,422,069.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,288,613.98 : 398,987,295.51 = 190,271,012.86 : x
  2. Step 2: Convert to fraction form
    289,288,613.98/398,987,295.51 = 190,271,012.86/x
  3. Step 3: Cross multiply
    289,288,613.98x = 398,987,295.51 × 190,271,012.86
  4. Step 4: Simplify right side
    289,288,613.98x = 75,915,716,834,959,840
  5. Step 5: Solve for x
    x = 75,915,716,834,959,840/289,288,613.98
  6. Step 6: Final answer
    x = 262,422,069.75

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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.