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Finding the Fourth Proportional to 355,079.97, 489,685.83 and 277,565.85

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Solution

The fourth proportional to 355,079.97, 489,685.83 and 277,565.85 is: 382,787.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,079.97 : 489,685.83 = 277,565.85 : x
  2. Step 2: Convert to fraction form
    355,079.97/489,685.83 = 277,565.85/x
  3. Step 3: Cross multiply
    355,079.97x = 489,685.83 × 277,565.85
  4. Step 4: Simplify right side
    355,079.97x = 135,920,063,636.91
  5. Step 5: Solve for x
    x = 135,920,063,636.91/355,079.97
  6. Step 6: Final answer
    x = 382,787.19

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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.