Home / 218,913.32-302,099.89-123,419.33

Finding the Fourth Proportional to 218,913.32, 302,099.89 and 123,419.33

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Solution

The fourth proportional to 218,913.32, 302,099.89 and 123,419.33 is: 170,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,913.32 : 302,099.89 = 123,419.33 : x
  2. Step 2: Convert to fraction form
    218,913.32/302,099.89 = 123,419.33/x
  3. Step 3: Cross multiply
    218,913.32x = 302,099.89 × 123,419.33
  4. Step 4: Simplify right side
    218,913.32x = 37,284,966,016.87
  5. Step 5: Solve for x
    x = 37,284,966,016.87/218,913.32
  6. Step 6: Final answer
    x = 170,318.40

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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.