Home / 218,333.28-301,283.70-122,821.56

Finding the Fourth Proportional to 218,333.28, 301,283.70 and 122,821.56

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Solution

The fourth proportional to 218,333.28, 301,283.70 and 122,821.56 is: 169,484.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,333.28 : 301,283.70 = 122,821.56 : x
  2. Step 2: Convert to fraction form
    218,333.28/301,283.70 = 122,821.56/x
  3. Step 3: Cross multiply
    218,333.28x = 301,283.70 × 122,821.56
  4. Step 4: Simplify right side
    218,333.28x = 37,004,134,036.57
  5. Step 5: Solve for x
    x = 37,004,134,036.57/218,333.28
  6. Step 6: Final answer
    x = 169,484.62

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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.