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Finding the Fourth Proportional to 354,852.84, 488,453.93 and 309,450.72

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Solution

The fourth proportional to 354,852.84, 488,453.93 and 309,450.72 is: 425,958.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,852.84 : 488,453.93 = 309,450.72 : x
  2. Step 2: Convert to fraction form
    354,852.84/488,453.93 = 309,450.72/x
  3. Step 3: Cross multiply
    354,852.84x = 488,453.93 × 309,450.72
  4. Step 4: Simplify right side
    354,852.84x = 151,152,420,325.33
  5. Step 5: Solve for x
    x = 151,152,420,325.33/354,852.84
  6. Step 6: Final answer
    x = 425,958.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.