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Finding the Fourth Proportional to 218,371.23, 301,356.90 and 122,877.90

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Solution

The fourth proportional to 218,371.23, 301,356.90 and 122,877.90 is: 169,574.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,371.23 : 301,356.90 = 122,877.90 : x
  2. Step 2: Convert to fraction form
    218,371.23/301,356.90 = 122,877.90/x
  3. Step 3: Cross multiply
    218,371.23x = 301,356.90 × 122,877.90
  4. Step 4: Simplify right side
    218,371.23x = 37,030,103,022.51
  5. Step 5: Solve for x
    x = 37,030,103,022.51/218,371.23
  6. Step 6: Final answer
    x = 169,574.09

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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.