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Finding the Fourth Proportional to 515,571.48, 711,940.59 and 322,309.53

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Solution

The fourth proportional to 515,571.48, 711,940.59 and 322,309.53 is: 445,069.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,571.48 : 711,940.59 = 322,309.53 : x
  2. Step 2: Convert to fraction form
    515,571.48/711,940.59 = 322,309.53/x
  3. Step 3: Cross multiply
    515,571.48x = 711,940.59 × 322,309.53
  4. Step 4: Simplify right side
    515,571.48x = 229,465,236,950.82
  5. Step 5: Solve for x
    x = 229,465,236,950.82/515,571.48
  6. Step 6: Final answer
    x = 445,069.69

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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.