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Finding the Fourth Proportional to 342,063.36, 471,994.56 and 191,131.20

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Solution

The fourth proportional to 342,063.36, 471,994.56 and 191,131.20 is: 263,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,063.36 : 471,994.56 = 191,131.20 : x
  2. Step 2: Convert to fraction form
    342,063.36/471,994.56 = 191,131.20/x
  3. Step 3: Cross multiply
    342,063.36x = 471,994.56 × 191,131.20
  4. Step 4: Simplify right side
    342,063.36x = 90,212,886,646.27
  5. Step 5: Solve for x
    x = 90,212,886,646.27/342,063.36
  6. Step 6: Final answer
    x = 263,731.51

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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.