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Finding the Fourth Proportional to 402,525.80, 603,788.70 and 165,789.80

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Solution

The fourth proportional to 402,525.80, 603,788.70 and 165,789.80 is: 248,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,525.80 : 603,788.70 = 165,789.80 : x
  2. Step 2: Convert to fraction form
    402,525.80/603,788.70 = 165,789.80/x
  3. Step 3: Cross multiply
    402,525.80x = 603,788.70 × 165,789.80
  4. Step 4: Simplify right side
    402,525.80x = 100,102,007,815.26
  5. Step 5: Solve for x
    x = 100,102,007,815.26/402,525.80
  6. Step 6: Final answer
    x = 248,684.70

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Similar ratio
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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.