Home / 278,406.08-384,201.40-151,081.64

Finding the Fourth Proportional to 278,406.08, 384,201.40 and 151,081.64

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Solution

The fourth proportional to 278,406.08, 384,201.40 and 151,081.64 is: 208,493.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,406.08 : 384,201.40 = 151,081.64 : x
  2. Step 2: Convert to fraction form
    278,406.08/384,201.40 = 151,081.64/x
  3. Step 3: Cross multiply
    278,406.08x = 384,201.40 × 151,081.64
  4. Step 4: Simplify right side
    278,406.08x = 58,045,777,602.30
  5. Step 5: Solve for x
    x = 58,045,777,602.30/278,406.08
  6. Step 6: Final answer
    x = 208,493.21

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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.