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Finding the Fourth Proportional to 372,109.55, 513,495.55 and 210,975.44

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Solution

The fourth proportional to 372,109.55, 513,495.55 and 210,975.44 is: 291,137.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,109.55 : 513,495.55 = 210,975.44 : x
  2. Step 2: Convert to fraction form
    372,109.55/513,495.55 = 210,975.44/x
  3. Step 3: Cross multiply
    372,109.55x = 513,495.55 × 210,975.44
  4. Step 4: Simplify right side
    372,109.55x = 108,334,947,295.53
  5. Step 5: Solve for x
    x = 108,334,947,295.53/372,109.55
  6. Step 6: Final answer
    x = 291,137.24

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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.