Home / 280,056.35-420,084.57-69,694.27

Finding the Fourth Proportional to 280,056.35, 420,084.57 and 69,694.27

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Solution

The fourth proportional to 280,056.35, 420,084.57 and 69,694.27 is: 104,541.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,056.35 : 420,084.57 = 69,694.27 : x
  2. Step 2: Convert to fraction form
    280,056.35/420,084.57 = 69,694.27/x
  3. Step 3: Cross multiply
    280,056.35x = 420,084.57 × 69,694.27
  4. Step 4: Simplify right side
    280,056.35x = 29,277,487,444.41
  5. Step 5: Solve for x
    x = 29,277,487,444.41/280,056.35
  6. Step 6: Final answer
    x = 104,541.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.