Home / 278,781.26-384,717.12-151,455.74

Finding the Fourth Proportional to 278,781.26, 384,717.12 and 151,455.74

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Solution

The fourth proportional to 278,781.26, 384,717.12 and 151,455.74 is: 209,008.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,781.26 : 384,717.12 = 151,455.74 : x
  2. Step 2: Convert to fraction form
    278,781.26/384,717.12 = 151,455.74/x
  3. Step 3: Cross multiply
    278,781.26x = 384,717.12 × 151,455.74
  4. Step 4: Simplify right side
    278,781.26x = 58,267,614,176.68
  5. Step 5: Solve for x
    x = 58,267,614,176.68/278,781.26
  6. Step 6: Final answer
    x = 209,008.36

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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.