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Finding the Fourth Proportional to 308,416.30, 461,345.06 and 289,520.62

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Solution

The fourth proportional to 308,416.30, 461,345.06 and 289,520.62 is: 433,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,416.30 : 461,345.06 = 289,520.62 : x
  2. Step 2: Convert to fraction form
    308,416.30/461,345.06 = 289,520.62/x
  3. Step 3: Cross multiply
    308,416.30x = 461,345.06 × 289,520.62
  4. Step 4: Simplify right side
    308,416.30x = 133,568,907,805.14
  5. Step 5: Solve for x
    x = 133,568,907,805.14/308,416.30
  6. Step 6: Final answer
    x = 433,079.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.