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Finding the Fourth Proportional to 353,559.78, 529,639.83 and 309,236.58

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Solution

The fourth proportional to 353,559.78, 529,639.83 and 309,236.58 is: 463,242.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,559.78 : 529,639.83 = 309,236.58 : x
  2. Step 2: Convert to fraction form
    353,559.78/529,639.83 = 309,236.58/x
  3. Step 3: Cross multiply
    353,559.78x = 529,639.83 × 309,236.58
  4. Step 4: Simplify right side
    353,559.78x = 163,784,009,660.98
  5. Step 5: Solve for x
    x = 163,784,009,660.98/353,559.78
  6. Step 6: Final answer
    x = 463,242.76

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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.