Home / 278,478.03-384,499.40-171,191.91

Finding the Fourth Proportional to 278,478.03, 384,499.40 and 171,191.91

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Solution

The fourth proportional to 278,478.03, 384,499.40 and 171,191.91 is: 236,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,478.03 : 384,499.40 = 171,191.91 : x
  2. Step 2: Convert to fraction form
    278,478.03/384,499.40 = 171,191.91/x
  3. Step 3: Cross multiply
    278,478.03x = 384,499.40 × 171,191.91
  4. Step 4: Simplify right side
    278,478.03x = 65,823,186,679.85
  5. Step 5: Solve for x
    x = 65,823,186,679.85/278,478.03
  6. Step 6: Final answer
    x = 236,367.61

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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.