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Finding the Fourth Proportional to 272,646.40, 376,399.60 and 191,224.64

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Solution

The fourth proportional to 272,646.40, 376,399.60 and 191,224.64 is: 263,993.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,646.40 : 376,399.60 = 191,224.64 : x
  2. Step 2: Convert to fraction form
    272,646.40/376,399.60 = 191,224.64/x
  3. Step 3: Cross multiply
    272,646.40x = 376,399.60 × 191,224.64
  4. Step 4: Simplify right side
    272,646.40x = 71,976,878,006.14
  5. Step 5: Solve for x
    x = 71,976,878,006.14/272,646.40
  6. Step 6: Final answer
    x = 263,993.50

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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.