Home / 278,905.77-384,892.47-151,581.51

Finding the Fourth Proportional to 278,905.77, 384,892.47 and 151,581.51

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Solution

The fourth proportional to 278,905.77, 384,892.47 and 151,581.51 is: 209,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,905.77 : 384,892.47 = 151,581.51 : x
  2. Step 2: Convert to fraction form
    278,905.77/384,892.47 = 151,581.51/x
  3. Step 3: Cross multiply
    278,905.77x = 384,892.47 × 151,581.51
  4. Step 4: Simplify right side
    278,905.77x = 58,342,581,790.23
  5. Step 5: Solve for x
    x = 58,342,581,790.23/278,905.77
  6. Step 6: Final answer
    x = 209,183.85

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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.