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Finding the Fourth Proportional to 262,056.80, 393,085.20 and 257,682.80

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Solution

The fourth proportional to 262,056.80, 393,085.20 and 257,682.80 is: 386,524.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,056.80 : 393,085.20 = 257,682.80 : x
  2. Step 2: Convert to fraction form
    262,056.80/393,085.20 = 257,682.80/x
  3. Step 3: Cross multiply
    262,056.80x = 393,085.20 × 257,682.80
  4. Step 4: Simplify right side
    262,056.80x = 101,291,294,974.56
  5. Step 5: Solve for x
    x = 101,291,294,974.56/262,056.80
  6. Step 6: Final answer
    x = 386,524.20

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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.