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Finding the Fourth Proportional to 307,806.76, 423,825.86 and 262,382.92

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Solution

The fourth proportional to 307,806.76, 423,825.86 and 262,382.92 is: 361,280.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,806.76 : 423,825.86 = 262,382.92 : x
  2. Step 2: Convert to fraction form
    307,806.76/423,825.86 = 262,382.92/x
  3. Step 3: Cross multiply
    307,806.76x = 423,825.86 × 262,382.92
  4. Step 4: Simplify right side
    307,806.76x = 111,204,666,718.31
  5. Step 5: Solve for x
    x = 111,204,666,718.31/307,806.76
  6. Step 6: Final answer
    x = 361,280.78

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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.