Home / 219,467.90-302,890.37-123,980.78

Finding the Fourth Proportional to 219,467.90, 302,890.37 and 123,980.78

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Solution

The fourth proportional to 219,467.90, 302,890.37 and 123,980.78 is: 171,107.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,467.90 : 302,890.37 = 123,980.78 : x
  2. Step 2: Convert to fraction form
    219,467.90/302,890.37 = 123,980.78/x
  3. Step 3: Cross multiply
    219,467.90x = 302,890.37 × 123,980.78
  4. Step 4: Simplify right side
    219,467.90x = 37,552,582,192.73
  5. Step 5: Solve for x
    x = 37,552,582,192.73/219,467.90
  6. Step 6: Final answer
    x = 171,107.41

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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.