Home / 278,939.16-384,919.62-151,613.64

Finding the Fourth Proportional to 278,939.16, 384,919.62 and 151,613.64

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Solution

The fourth proportional to 278,939.16, 384,919.62 and 151,613.64 is: 209,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,939.16 : 384,919.62 = 151,613.64 : x
  2. Step 2: Convert to fraction form
    278,939.16/384,919.62 = 151,613.64/x
  3. Step 3: Cross multiply
    278,939.16x = 384,919.62 × 151,613.64
  4. Step 4: Simplify right side
    278,939.16x = 58,359,064,695.62
  5. Step 5: Solve for x
    x = 58,359,064,695.62/278,939.16
  6. Step 6: Final answer
    x = 209,217.90

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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.