Home / 217,715.49-300,447.14-122,222.39

Finding the Fourth Proportional to 217,715.49, 300,447.14 and 122,222.39

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Solution

The fourth proportional to 217,715.49, 300,447.14 and 122,222.39 is: 168,666.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,715.49 : 300,447.14 = 122,222.39 : x
  2. Step 2: Convert to fraction form
    217,715.49/300,447.14 = 122,222.39/x
  3. Step 3: Cross multiply
    217,715.49x = 300,447.14 × 122,222.39
  4. Step 4: Simplify right side
    217,715.49x = 36,721,365,406.12
  5. Step 5: Solve for x
    x = 36,721,365,406.12/217,715.49
  6. Step 6: Final answer
    x = 168,666.76

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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.