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Finding the Fourth Proportional to 354,818.88, 489,576.96 and 203,886.72

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Solution

The fourth proportional to 354,818.88, 489,576.96 and 203,886.72 is: 281,321.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,818.88 : 489,576.96 = 203,886.72 : x
  2. Step 2: Convert to fraction form
    354,818.88/489,576.96 = 203,886.72/x
  3. Step 3: Cross multiply
    354,818.88x = 489,576.96 × 203,886.72
  4. Step 4: Simplify right side
    354,818.88x = 99,818,240,561.97
  5. Step 5: Solve for x
    x = 99,818,240,561.97/354,818.88
  6. Step 6: Final answer
    x = 281,321.67

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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.