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Finding the Fourth Proportional to 285,594.80, 428,392.20 and 108,107.60

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Solution

The fourth proportional to 285,594.80, 428,392.20 and 108,107.60 is: 162,161.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,594.80 : 428,392.20 = 108,107.60 : x
  2. Step 2: Convert to fraction form
    285,594.80/428,392.20 = 108,107.60/x
  3. Step 3: Cross multiply
    285,594.80x = 428,392.20 × 108,107.60
  4. Step 4: Simplify right side
    285,594.80x = 46,312,452,600.72
  5. Step 5: Solve for x
    x = 46,312,452,600.72/285,594.80
  6. Step 6: Final answer
    x = 162,161.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.