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Finding the Fourth Proportional to 354,913.38, 489,772.98 and 193,760.64

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Solution

The fourth proportional to 354,913.38, 489,772.98 and 193,760.64 is: 267,385.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,913.38 : 489,772.98 = 193,760.64 : x
  2. Step 2: Convert to fraction form
    354,913.38/489,772.98 = 193,760.64/x
  3. Step 3: Cross multiply
    354,913.38x = 489,772.98 × 193,760.64
  4. Step 4: Simplify right side
    354,913.38x = 94,898,726,059.51
  5. Step 5: Solve for x
    x = 94,898,726,059.51/354,913.38
  6. Step 6: Final answer
    x = 267,385.60

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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.