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Finding the Fourth Proportional to 245,893.12, 339,323.38 and 136,994.90

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Solution

The fourth proportional to 245,893.12, 339,323.38 and 136,994.90 is: 189,047.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,893.12 : 339,323.38 = 136,994.90 : x
  2. Step 2: Convert to fraction form
    245,893.12/339,323.38 = 136,994.90/x
  3. Step 3: Cross multiply
    245,893.12x = 339,323.38 × 136,994.90
  4. Step 4: Simplify right side
    245,893.12x = 46,485,570,471.66
  5. Step 5: Solve for x
    x = 46,485,570,471.66/245,893.12
  6. Step 6: Final answer
    x = 189,047.87

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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.