Home / 203,290.45-280,536.63-112,645.62

Finding the Fourth Proportional to 203,290.45, 280,536.63 and 112,645.62

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Solution

The fourth proportional to 203,290.45, 280,536.63 and 112,645.62 is: 155,448.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,290.45 : 280,536.63 = 112,645.62 : x
  2. Step 2: Convert to fraction form
    203,290.45/280,536.63 = 112,645.62/x
  3. Step 3: Cross multiply
    203,290.45x = 280,536.63 × 112,645.62
  4. Step 4: Simplify right side
    203,290.45x = 31,601,222,619.06
  5. Step 5: Solve for x
    x = 31,601,222,619.06/203,290.45
  6. Step 6: Final answer
    x = 155,448.63

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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.