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Finding the Fourth Proportional to 388,751.36, 536,466.72 and 218,975.36

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Solution

The fourth proportional to 388,751.36, 536,466.72 and 218,975.36 is: 302,180.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,751.36 : 536,466.72 = 218,975.36 : x
  2. Step 2: Convert to fraction form
    388,751.36/536,466.72 = 218,975.36/x
  3. Step 3: Cross multiply
    388,751.36x = 536,466.72 × 218,975.36
  4. Step 4: Simplify right side
    388,751.36x = 117,472,993,140.02
  5. Step 5: Solve for x
    x = 117,472,993,140.02/388,751.36
  6. Step 6: Final answer
    x = 302,180.28

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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.