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Finding the Fourth Proportional to 307,799.76, 423,816.20 and 262,375.92

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Solution

The fourth proportional to 307,799.76, 423,816.20 and 262,375.92 is: 361,271.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,799.76 : 423,816.20 = 262,375.92 : x
  2. Step 2: Convert to fraction form
    307,799.76/423,816.20 = 262,375.92/x
  3. Step 3: Cross multiply
    307,799.76x = 423,816.20 × 262,375.92
  4. Step 4: Simplify right side
    307,799.76x = 111,199,165,385.90
  5. Step 5: Solve for x
    x = 111,199,165,385.90/307,799.76
  6. Step 6: Final answer
    x = 361,271.12

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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.