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Finding the Fourth Proportional to 412,953.45, 618,907.68 and 235,560.21

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Solution

The fourth proportional to 412,953.45, 618,907.68 and 235,560.21 is: 353,042.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,953.45 : 618,907.68 = 235,560.21 : x
  2. Step 2: Convert to fraction form
    412,953.45/618,907.68 = 235,560.21/x
  3. Step 3: Cross multiply
    412,953.45x = 618,907.68 × 235,560.21
  4. Step 4: Simplify right side
    412,953.45x = 145,790,023,071.41
  5. Step 5: Solve for x
    x = 145,790,023,071.41/412,953.45
  6. Step 6: Final answer
    x = 353,042.27

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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.