Home / 219,146.87-302,406.05-123,662.45

Finding the Fourth Proportional to 219,146.87, 302,406.05 and 123,662.45

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Solution

The fourth proportional to 219,146.87, 302,406.05 and 123,662.45 is: 170,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,146.87 : 302,406.05 = 123,662.45 : x
  2. Step 2: Convert to fraction form
    219,146.87/302,406.05 = 123,662.45/x
  3. Step 3: Cross multiply
    219,146.87x = 302,406.05 × 123,662.45
  4. Step 4: Simplify right side
    219,146.87x = 37,396,270,907.48
  5. Step 5: Solve for x
    x = 37,396,270,907.48/219,146.87
  6. Step 6: Final answer
    x = 170,644.79

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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.