Home / 216,206,378.31-324,826,946.13-138,635,261.64

Finding the Fourth Proportional to 216,206,378.31, 324,826,946.13 and 138,635,261.64

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Solution

The fourth proportional to 216,206,378.31, 324,826,946.13 and 138,635,261.64 is: 208,284,644.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,206,378.31 : 324,826,946.13 = 138,635,261.64 : x
  2. Step 2: Convert to fraction form
    216,206,378.31/324,826,946.13 = 138,635,261.64/x
  3. Step 3: Cross multiply
    216,206,378.31x = 324,826,946.13 × 138,635,261.64
  4. Step 4: Simplify right side
    216,206,378.31x = 45,032,468,662,949,488
  5. Step 5: Solve for x
    x = 45,032,468,662,949,488/216,206,378.31
  6. Step 6: Final answer
    x = 208,284,644.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.