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Finding the Fourth Proportional to 342,012.76, 471,976.62 and 191,109.88

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Solution

The fourth proportional to 342,012.76, 471,976.62 and 191,109.88 is: 263,731.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,012.76 : 471,976.62 = 191,109.88 : x
  2. Step 2: Convert to fraction form
    342,012.76/471,976.62 = 191,109.88/x
  3. Step 3: Cross multiply
    342,012.76x = 471,976.62 × 191,109.88
  4. Step 4: Simplify right side
    342,012.76x = 90,199,395,211.01
  5. Step 5: Solve for x
    x = 90,199,395,211.01/342,012.76
  6. Step 6: Final answer
    x = 263,731.08

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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.