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Finding the Fourth Proportional to 388,559.25, 536,211.77 and 227,406.51

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Solution

The fourth proportional to 388,559.25, 536,211.77 and 227,406.51 is: 313,820.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,559.25 : 536,211.77 = 227,406.51 : x
  2. Step 2: Convert to fraction form
    388,559.25/536,211.77 = 227,406.51/x
  3. Step 3: Cross multiply
    388,559.25x = 536,211.77 × 227,406.51
  4. Step 4: Simplify right side
    388,559.25x = 121,938,046,099.59
  5. Step 5: Solve for x
    x = 121,938,046,099.59/388,559.25
  6. Step 6: Final answer
    x = 313,820.98

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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.