Home / 258,942,656.52-388,469,972-137,756,495.88

Finding the Fourth Proportional to 258,942,656.52, 388,469,972 and 137,756,495.88

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Solution

The fourth proportional to 258,942,656.52, 388,469,972 and 137,756,495.88 is: 206,664,528.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,942,656.52 : 388,469,972 = 137,756,495.88 : x
  2. Step 2: Convert to fraction form
    258,942,656.52/388,469,972 = 137,756,495.88/x
  3. Step 3: Cross multiply
    258,942,656.52x = 388,469,972 × 137,756,495.88
  4. Step 4: Simplify right side
    258,942,656.52x = 53,514,262,097,321,712
  5. Step 5: Solve for x
    x = 53,514,262,097,321,712/258,942,656.52
  6. Step 6: Final answer
    x = 206,664,528.81

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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.