Home / 312,514,976.63-431,290,053.71-173,285,738.39

Finding the Fourth Proportional to 312,514,976.63, 431,290,053.71 and 173,285,738.39

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Solution

The fourth proportional to 312,514,976.63, 431,290,053.71 and 173,285,738.39 is: 239,145,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,514,976.63 : 431,290,053.71 = 173,285,738.39 : x
  2. Step 2: Convert to fraction form
    312,514,976.63/431,290,053.71 = 173,285,738.39/x
  3. Step 3: Cross multiply
    312,514,976.63x = 431,290,053.71 × 173,285,738.39
  4. Step 4: Simplify right side
    312,514,976.63x = 74,736,415,418,629,216
  5. Step 5: Solve for x
    x = 74,736,415,418,629,216/312,514,976.63
  6. Step 6: Final answer
    x = 239,145,068.26

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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.