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Finding the Fourth Proportional to 308,575.80, 462,863.70 and 256,087.80

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Solution

The fourth proportional to 308,575.80, 462,863.70 and 256,087.80 is: 384,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,575.80 : 462,863.70 = 256,087.80 : x
  2. Step 2: Convert to fraction form
    308,575.80/462,863.70 = 256,087.80/x
  3. Step 3: Cross multiply
    308,575.80x = 462,863.70 × 256,087.80
  4. Step 4: Simplify right side
    308,575.80x = 118,533,746,632.86
  5. Step 5: Solve for x
    x = 118,533,746,632.86/308,575.80
  6. Step 6: Final answer
    x = 384,131.70

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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.