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Finding the Fourth Proportional to 305,826.93, 422,041.20 and 171,690.93

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Solution

The fourth proportional to 305,826.93, 422,041.20 and 171,690.93 is: 236,933.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,826.93 : 422,041.20 = 171,690.93 : x
  2. Step 2: Convert to fraction form
    305,826.93/422,041.20 = 171,690.93/x
  3. Step 3: Cross multiply
    305,826.93x = 422,041.20 × 171,690.93
  4. Step 4: Simplify right side
    305,826.93x = 72,460,646,126.32
  5. Step 5: Solve for x
    x = 72,460,646,126.32/305,826.93
  6. Step 6: Final answer
    x = 236,933.50

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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.