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Finding the Fourth Proportional to 326,846.82, 490,143.86 and 127,140.24

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Solution

The fourth proportional to 326,846.82, 490,143.86 and 127,140.24 is: 190,661.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,846.82 : 490,143.86 = 127,140.24 : x
  2. Step 2: Convert to fraction form
    326,846.82/490,143.86 = 127,140.24/x
  3. Step 3: Cross multiply
    326,846.82x = 490,143.86 × 127,140.24
  4. Step 4: Simplify right side
    326,846.82x = 62,317,007,994.93
  5. Step 5: Solve for x
    x = 62,317,007,994.93/326,846.82
  6. Step 6: Final answer
    x = 190,661.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.