Home / 353,120.31-487,315.64-191,986.47

Finding the Fourth Proportional to 353,120.31, 487,315.64 and 191,986.47

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Solution

The fourth proportional to 353,120.31, 487,315.64 and 191,986.47 is: 264,946.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,120.31 : 487,315.64 = 191,986.47 : x
  2. Step 2: Convert to fraction form
    353,120.31/487,315.64 = 191,986.47/x
  3. Step 3: Cross multiply
    353,120.31x = 487,315.64 × 191,986.47
  4. Step 4: Simplify right side
    353,120.31x = 93,558,009,979.36
  5. Step 5: Solve for x
    x = 93,558,009,979.36/353,120.31
  6. Step 6: Final answer
    x = 264,946.56

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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.