Home / 280,055.35-420,083.07-69,693.27

Finding the Fourth Proportional to 280,055.35, 420,083.07 and 69,693.27

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Solution

The fourth proportional to 280,055.35, 420,083.07 and 69,693.27 is: 104,539.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,055.35 : 420,083.07 = 69,693.27 : x
  2. Step 2: Convert to fraction form
    280,055.35/420,083.07 = 69,693.27/x
  3. Step 3: Cross multiply
    280,055.35x = 420,083.07 × 69,693.27
  4. Step 4: Simplify right side
    280,055.35x = 29,276,962,819.94
  5. Step 5: Solve for x
    x = 29,276,962,819.94/280,055.35
  6. Step 6: Final answer
    x = 104,539.92

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1.5x scale

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.