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Finding the Fourth Proportional to 304,826.20, 420,655.60 and 168,859.74

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Solution

The fourth proportional to 304,826.20, 420,655.60 and 168,859.74 is: 233,023.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,826.20 : 420,655.60 = 168,859.74 : x
  2. Step 2: Convert to fraction form
    304,826.20/420,655.60 = 168,859.74/x
  3. Step 3: Cross multiply
    304,826.20x = 420,655.60 × 168,859.74
  4. Step 4: Simplify right side
    304,826.20x = 71,031,795,245.54
  5. Step 5: Solve for x
    x = 71,031,795,245.54/304,826.20
  6. Step 6: Final answer
    x = 233,023.92

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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.