Home / 288,584,778.30-398,236,324.81-156,422,937.26

Finding the Fourth Proportional to 288,584,778.30, 398,236,324.81 and 156,422,937.26

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Solution

The fourth proportional to 288,584,778.30, 398,236,324.81 and 156,422,937.26 is: 215,857,870.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,584,778.30 : 398,236,324.81 = 156,422,937.26 : x
  2. Step 2: Convert to fraction form
    288,584,778.30/398,236,324.81 = 156,422,937.26/x
  3. Step 3: Cross multiply
    288,584,778.30x = 398,236,324.81 × 156,422,937.26
  4. Step 4: Simplify right side
    288,584,778.30x = 62,293,295,649,625,496
  5. Step 5: Solve for x
    x = 62,293,295,649,625,496/288,584,778.30
  6. Step 6: Final answer
    x = 215,857,870.32

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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.