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Finding the Fourth Proportional to 371,738, 556,400.60 and 200,721.98

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Solution

The fourth proportional to 371,738, 556,400.60 and 200,721.98 is: 300,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,738 : 556,400.60 = 200,721.98 : x
  2. Step 2: Convert to fraction form
    371,738/556,400.60 = 200,721.98/x
  3. Step 3: Cross multiply
    371,738x = 556,400.60 × 200,721.98
  4. Step 4: Simplify right side
    371,738x = 111,681,827,323.19
  5. Step 5: Solve for x
    x = 111,681,827,323.19/371,738
  6. Step 6: Final answer
    x = 300,431.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.