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Finding the Fourth Proportional to 525,790.20, 788,879.70 and 170,815.80

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Solution

The fourth proportional to 525,790.20, 788,879.70 and 170,815.80 is: 256,286.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,790.20 : 788,879.70 = 170,815.80 : x
  2. Step 2: Convert to fraction form
    525,790.20/788,879.70 = 170,815.80/x
  3. Step 3: Cross multiply
    525,790.20x = 788,879.70 × 170,815.80
  4. Step 4: Simplify right side
    525,790.20x = 134,753,117,059.26
  5. Step 5: Solve for x
    x = 134,753,117,059.26/525,790.20
  6. Step 6: Final answer
    x = 256,286.86

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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.