Home / 320,983,919.71-442,950,315.21-188,833,426.54

Finding the Fourth Proportional to 320,983,919.71, 442,950,315.21 and 188,833,426.54

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Solution

The fourth proportional to 320,983,919.71, 442,950,315.21 and 188,833,426.54 is: 260,585,719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,983,919.71 : 442,950,315.21 = 188,833,426.54 : x
  2. Step 2: Convert to fraction form
    320,983,919.71/442,950,315.21 = 188,833,426.54/x
  3. Step 3: Cross multiply
    320,983,919.71x = 442,950,315.21 × 188,833,426.54
  4. Step 4: Simplify right side
    320,983,919.71x = 83,643,825,806,970,000
  5. Step 5: Solve for x
    x = 83,643,825,806,970,000/320,983,919.71
  6. Step 6: Final answer
    x = 260,585,719.94

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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.