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Finding the Fourth Proportional to 388,593, 536,259.94 and 218,829.96

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Solution

The fourth proportional to 388,593, 536,259.94 and 218,829.96 is: 301,986.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,593 : 536,259.94 = 218,829.96 : x
  2. Step 2: Convert to fraction form
    388,593/536,259.94 = 218,829.96/x
  3. Step 3: Cross multiply
    388,593x = 536,259.94 × 218,829.96
  4. Step 4: Simplify right side
    388,593x = 117,349,741,219.80
  5. Step 5: Solve for x
    x = 117,349,741,219.80/388,593
  6. Step 6: Final answer
    x = 301,986.25

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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.