Home / 288,584,782.76-398,236,331.01-156,422,941.73

Finding the Fourth Proportional to 288,584,782.76, 398,236,331.01 and 156,422,941.73

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Solution

The fourth proportional to 288,584,782.76, 398,236,331.01 and 156,422,941.73 is: 215,857,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,584,782.76 : 398,236,331.01 = 156,422,941.73 : x
  2. Step 2: Convert to fraction form
    288,584,782.76/398,236,331.01 = 156,422,941.73/x
  3. Step 3: Cross multiply
    288,584,782.76x = 398,236,331.01 × 156,422,941.73
  4. Step 4: Simplify right side
    288,584,782.76x = 62,293,298,400,346,216
  5. Step 5: Solve for x
    x = 62,293,298,400,346,216/288,584,782.76
  6. Step 6: Final answer
    x = 215,857,876.51

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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.