Home / 278,911.08-384,894.99-151,587.45

Finding the Fourth Proportional to 278,911.08, 384,894.99 and 151,587.45

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Solution

The fourth proportional to 278,911.08, 384,894.99 and 151,587.45 is: 209,189.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,911.08 : 384,894.99 = 151,587.45 : x
  2. Step 2: Convert to fraction form
    278,911.08/384,894.99 = 151,587.45/x
  3. Step 3: Cross multiply
    278,911.08x = 384,894.99 × 151,587.45
  4. Step 4: Simplify right side
    278,911.08x = 58,345,250,051.88
  5. Step 5: Solve for x
    x = 58,345,250,051.88/278,911.08
  6. Step 6: Final answer
    x = 209,189.43

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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.