Home / 280,091.04-420,323.37-145,279.38

Finding the Fourth Proportional to 280,091.04, 420,323.37 and 145,279.38

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Solution

The fourth proportional to 280,091.04, 420,323.37 and 145,279.38 is: 218,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,091.04 : 420,323.37 = 145,279.38 : x
  2. Step 2: Convert to fraction form
    280,091.04/420,323.37 = 145,279.38/x
  3. Step 3: Cross multiply
    280,091.04x = 420,323.37 × 145,279.38
  4. Step 4: Simplify right side
    280,091.04x = 61,064,318,593.11
  5. Step 5: Solve for x
    x = 61,064,318,593.11/280,091.04
  6. Step 6: Final answer
    x = 218,015.97

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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.