Home / 288,584,781.27-398,236,328.95-156,422,940.23

Finding the Fourth Proportional to 288,584,781.27, 398,236,328.95 and 156,422,940.23

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Solution

The fourth proportional to 288,584,781.27, 398,236,328.95 and 156,422,940.23 is: 215,857,874.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,584,781.27 : 398,236,328.95 = 156,422,940.23 : x
  2. Step 2: Convert to fraction form
    288,584,781.27/398,236,328.95 = 156,422,940.23/x
  3. Step 3: Cross multiply
    288,584,781.27x = 398,236,328.95 × 156,422,940.23
  4. Step 4: Simplify right side
    288,584,781.27x = 62,293,297,479,978,352
  5. Step 5: Solve for x
    x = 62,293,297,479,978,352/288,584,781.27
  6. Step 6: Final answer
    x = 215,857,874.44

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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.