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Finding the Fourth Proportional to 354,953.46, 489,845.86 and 193,818.72

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Solution

The fourth proportional to 354,953.46, 489,845.86 and 193,818.72 is: 267,475.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,953.46 : 489,845.86 = 193,818.72 : x
  2. Step 2: Convert to fraction form
    354,953.46/489,845.86 = 193,818.72/x
  3. Step 3: Cross multiply
    354,953.46x = 489,845.86 × 193,818.72
  4. Step 4: Simplify right side
    354,953.46x = 94,941,297,582.50
  5. Step 5: Solve for x
    x = 94,941,297,582.50/354,953.46
  6. Step 6: Final answer
    x = 267,475.34

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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.