Home / 278,680.03-384,578.10-151,354.71

Finding the Fourth Proportional to 278,680.03, 384,578.10 and 151,354.71

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Solution

The fourth proportional to 278,680.03, 384,578.10 and 151,354.71 is: 208,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,680.03 : 384,578.10 = 151,354.71 : x
  2. Step 2: Convert to fraction form
    278,680.03/384,578.10 = 151,354.71/x
  3. Step 3: Cross multiply
    278,680.03x = 384,578.10 × 151,354.71
  4. Step 4: Simplify right side
    278,680.03x = 58,207,706,797.85
  5. Step 5: Solve for x
    x = 58,207,706,797.85/278,680.03
  6. Step 6: Final answer
    x = 208,869.32

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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.