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Finding the Fourth Proportional to 262,811.70, 394,217.55 and 260,046.90

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Solution

The fourth proportional to 262,811.70, 394,217.55 and 260,046.90 is: 390,070.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,811.70 : 394,217.55 = 260,046.90 : x
  2. Step 2: Convert to fraction form
    262,811.70/394,217.55 = 260,046.90/x
  3. Step 3: Cross multiply
    262,811.70x = 394,217.55 × 260,046.90
  4. Step 4: Simplify right side
    262,811.70x = 102,515,051,803.10
  5. Step 5: Solve for x
    x = 102,515,051,803.10/262,811.70
  6. Step 6: Final answer
    x = 390,070.35

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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.