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Finding the Fourth Proportional to 351,117.69, 484,538.96 and 189,969.20

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Solution

The fourth proportional to 351,117.69, 484,538.96 and 189,969.20 is: 262,155.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,117.69 : 484,538.96 = 189,969.20 : x
  2. Step 2: Convert to fraction form
    351,117.69/484,538.96 = 189,969.20/x
  3. Step 3: Cross multiply
    351,117.69x = 484,538.96 × 189,969.20
  4. Step 4: Simplify right side
    351,117.69x = 92,047,478,469.28
  5. Step 5: Solve for x
    x = 92,047,478,469.28/351,117.69
  6. Step 6: Final answer
    x = 262,155.63

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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.