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Finding the Fourth Proportional to 245,653.56, 339,001.29 and 138,223.71

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Solution

The fourth proportional to 245,653.56, 339,001.29 and 138,223.71 is: 190,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,653.56 : 339,001.29 = 138,223.71 : x
  2. Step 2: Convert to fraction form
    245,653.56/339,001.29 = 138,223.71/x
  3. Step 3: Cross multiply
    245,653.56x = 339,001.29 × 138,223.71
  4. Step 4: Simplify right side
    245,653.56x = 46,858,015,998.59
  5. Step 5: Solve for x
    x = 46,858,015,998.59/245,653.56
  6. Step 6: Final answer
    x = 190,748.37

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1.5x scale

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.