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Finding the Fourth Proportional to 262,830.70, 394,246.05 and 260,065.90

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Solution

The fourth proportional to 262,830.70, 394,246.05 and 260,065.90 is: 390,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,830.70 : 394,246.05 = 260,065.90 : x
  2. Step 2: Convert to fraction form
    262,830.70/394,246.05 = 260,065.90/x
  3. Step 3: Cross multiply
    262,830.70x = 394,246.05 × 260,065.90
  4. Step 4: Simplify right side
    262,830.70x = 102,529,953,814.70
  5. Step 5: Solve for x
    x = 102,529,953,814.70/262,830.70
  6. Step 6: Final answer
    x = 390,098.85

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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.