Home / 217,667,587.14-300,580,903.23-138,308,789.28

Finding the Fourth Proportional to 217,667,587.14, 300,580,903.23 and 138,308,789.28

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Solution

The fourth proportional to 217,667,587.14, 300,580,903.23 and 138,308,789.28 is: 190,992,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,667,587.14 : 300,580,903.23 = 138,308,789.28 : x
  2. Step 2: Convert to fraction form
    217,667,587.14/300,580,903.23 = 138,308,789.28/x
  3. Step 3: Cross multiply
    217,667,587.14x = 300,580,903.23 × 138,308,789.28
  4. Step 4: Simplify right side
    217,667,587.14x = 41,572,980,806,430,144
  5. Step 5: Solve for x
    x = 41,572,980,806,430,144/217,667,587.14
  6. Step 6: Final answer
    x = 190,992,978.57

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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.