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Finding the Fourth Proportional to 280,409.85, 386,951.04 and 159,548.67

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Solution

The fourth proportional to 280,409.85, 386,951.04 and 159,548.67 is: 220,168.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,409.85 : 386,951.04 = 159,548.67 : x
  2. Step 2: Convert to fraction form
    280,409.85/386,951.04 = 159,548.67/x
  3. Step 3: Cross multiply
    280,409.85x = 386,951.04 × 159,548.67
  4. Step 4: Simplify right side
    280,409.85x = 61,737,523,787.12
  5. Step 5: Solve for x
    x = 61,737,523,787.12/280,409.85
  6. Step 6: Final answer
    x = 220,168.88

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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.