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Finding the Fourth Proportional to 260,344.65, 358,633.44 and 221,979.21

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Solution

The fourth proportional to 260,344.65, 358,633.44 and 221,979.21 is: 305,783.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,344.65 : 358,633.44 = 221,979.21 : x
  2. Step 2: Convert to fraction form
    260,344.65/358,633.44 = 221,979.21/x
  3. Step 3: Cross multiply
    260,344.65x = 358,633.44 × 221,979.21
  4. Step 4: Simplify right side
    260,344.65x = 79,609,166,345.91
  5. Step 5: Solve for x
    x = 79,609,166,345.91/260,344.65
  6. Step 6: Final answer
    x = 305,783.76

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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.