Home / 217,973.37-300,830.13-122,478

Finding the Fourth Proportional to 217,973.37, 300,830.13 and 122,478

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Solution

The fourth proportional to 217,973.37, 300,830.13 and 122,478 is: 169,034.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,973.37 : 300,830.13 = 122,478 : x
  2. Step 2: Convert to fraction form
    217,973.37/300,830.13 = 122,478/x
  3. Step 3: Cross multiply
    217,973.37x = 300,830.13 × 122,478
  4. Step 4: Simplify right side
    217,973.37x = 36,845,072,662.14
  5. Step 5: Solve for x
    x = 36,845,072,662.14/217,973.37
  6. Step 6: Final answer
    x = 169,034.74

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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.