Home / 217,954,921.28-300,780,137.76-118,834,858.40

Finding the Fourth Proportional to 217,954,921.28, 300,780,137.76 and 118,834,858.40

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Solution

The fourth proportional to 217,954,921.28, 300,780,137.76 and 118,834,858.40 is: 163,993,383.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,954,921.28 : 300,780,137.76 = 118,834,858.40 : x
  2. Step 2: Convert to fraction form
    217,954,921.28/300,780,137.76 = 118,834,858.40/x
  3. Step 3: Cross multiply
    217,954,921.28x = 300,780,137.76 × 118,834,858.40
  4. Step 4: Simplify right side
    217,954,921.28x = 35,743,165,080,242,092
  5. Step 5: Solve for x
    x = 35,743,165,080,242,092/217,954,921.28
  6. Step 6: Final answer
    x = 163,993,383.91

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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.