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Finding the Fourth Proportional to 304,826.12, 420,654.54 and 168,859.65

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Solution

The fourth proportional to 304,826.12, 420,654.54 and 168,859.65 is: 233,023.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,826.12 : 420,654.54 = 168,859.65 : x
  2. Step 2: Convert to fraction form
    304,826.12/420,654.54 = 168,859.65/x
  3. Step 3: Cross multiply
    304,826.12x = 420,654.54 × 168,859.65
  4. Step 4: Simplify right side
    304,826.12x = 71,031,578,395.31
  5. Step 5: Solve for x
    x = 71,031,578,395.31/304,826.12
  6. Step 6: Final answer
    x = 233,023.27

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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.