Home / 312,322,455.70-431,005,029.72-173,102,205.58

Finding the Fourth Proportional to 312,322,455.70, 431,005,029.72 and 173,102,205.58

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Solution

The fourth proportional to 312,322,455.70, 431,005,029.72 and 173,102,205.58 is: 238,881,066.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,322,455.70 : 431,005,029.72 = 173,102,205.58 : x
  2. Step 2: Convert to fraction form
    312,322,455.70/431,005,029.72 = 173,102,205.58/x
  3. Step 3: Cross multiply
    312,322,455.70x = 431,005,029.72 × 173,102,205.58
  4. Step 4: Simplify right side
    312,322,455.70x = 74,607,921,260,605,456
  5. Step 5: Solve for x
    x = 74,607,921,260,605,456/312,322,455.70
  6. Step 6: Final answer
    x = 238,881,066.34

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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.