Home / 312,440,374.70-431,329,955.55-242,669,540.78

Finding the Fourth Proportional to 312,440,374.70, 431,329,955.55 and 242,669,540.78

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Solution

The fourth proportional to 312,440,374.70, 431,329,955.55 and 242,669,540.78 is: 335,009,975.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,440,374.70 : 431,329,955.55 = 242,669,540.78 : x
  2. Step 2: Convert to fraction form
    312,440,374.70/431,329,955.55 = 242,669,540.78/x
  3. Step 3: Cross multiply
    312,440,374.70x = 431,329,955.55 × 242,669,540.78
  4. Step 4: Simplify right side
    312,440,374.70x = 104,670,642,237,976,320
  5. Step 5: Solve for x
    x = 104,670,642,237,976,320/312,440,374.70
  6. Step 6: Final answer
    x = 335,009,975.39

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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.