Home / 326,921.40-490,382.10-307,567.80

Finding the Fourth Proportional to 326,921.40, 490,382.10 and 307,567.80

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Solution

The fourth proportional to 326,921.40, 490,382.10 and 307,567.80 is: 461,351.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,921.40 : 490,382.10 = 307,567.80 : x
  2. Step 2: Convert to fraction form
    326,921.40/490,382.10 = 307,567.80/x
  3. Step 3: Cross multiply
    326,921.40x = 490,382.10 × 307,567.80
  4. Step 4: Simplify right side
    326,921.40x = 150,825,743,656.38
  5. Step 5: Solve for x
    x = 150,825,743,656.38/326,921.40
  6. Step 6: Final answer
    x = 461,351.70

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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.