Home / 278,467.85-384,286.38-151,143.45

Finding the Fourth Proportional to 278,467.85, 384,286.38 and 151,143.45

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Solution

The fourth proportional to 278,467.85, 384,286.38 and 151,143.45 is: 208,578.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,467.85 : 384,286.38 = 151,143.45 : x
  2. Step 2: Convert to fraction form
    278,467.85/384,286.38 = 151,143.45/x
  3. Step 3: Cross multiply
    278,467.85x = 384,286.38 × 151,143.45
  4. Step 4: Simplify right side
    278,467.85x = 58,082,368,111.57
  5. Step 5: Solve for x
    x = 58,082,368,111.57/278,467.85
  6. Step 6: Final answer
    x = 208,578.36

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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.