Home / 278,941.50-384,939.72-151,616.79

Finding the Fourth Proportional to 278,941.50, 384,939.72 and 151,616.79

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Solution

The fourth proportional to 278,941.50, 384,939.72 and 151,616.79 is: 209,231.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,941.50 : 384,939.72 = 151,616.79 : x
  2. Step 2: Convert to fraction form
    278,941.50/384,939.72 = 151,616.79/x
  3. Step 3: Cross multiply
    278,941.50x = 384,939.72 × 151,616.79
  4. Step 4: Simplify right side
    278,941.50x = 58,363,324,689.90
  5. Step 5: Solve for x
    x = 58,363,324,689.90/278,941.50
  6. Step 6: Final answer
    x = 209,231.41

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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.