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Finding the Fourth Proportional to 311,688.57, 467,416.22 and 245,903.61

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Solution

The fourth proportional to 311,688.57, 467,416.22 and 245,903.61 is: 368,763.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,688.57 : 467,416.22 = 245,903.61 : x
  2. Step 2: Convert to fraction form
    311,688.57/467,416.22 = 245,903.61/x
  3. Step 3: Cross multiply
    311,688.57x = 467,416.22 × 245,903.61
  4. Step 4: Simplify right side
    311,688.57x = 114,939,334,641.04
  5. Step 5: Solve for x
    x = 114,939,334,641.04/311,688.57
  6. Step 6: Final answer
    x = 368,763.39

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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.