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Finding the Fourth Proportional to 262,008.60, 393,012.90 and 259,675.80

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Solution

The fourth proportional to 262,008.60, 393,012.90 and 259,675.80 is: 389,513.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,008.60 : 393,012.90 = 259,675.80 : x
  2. Step 2: Convert to fraction form
    262,008.60/393,012.90 = 259,675.80/x
  3. Step 3: Cross multiply
    262,008.60x = 393,012.90 × 259,675.80
  4. Step 4: Simplify right side
    262,008.60x = 102,055,939,217.82
  5. Step 5: Solve for x
    x = 102,055,939,217.82/262,008.60
  6. Step 6: Final answer
    x = 389,513.70

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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.