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Finding the Fourth Proportional to 308,760.80, 463,141.20 and 256,272.80

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Solution

The fourth proportional to 308,760.80, 463,141.20 and 256,272.80 is: 384,409.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,760.80 : 463,141.20 = 256,272.80 : x
  2. Step 2: Convert to fraction form
    308,760.80/463,141.20 = 256,272.80/x
  3. Step 3: Cross multiply
    308,760.80x = 463,141.20 × 256,272.80
  4. Step 4: Simplify right side
    308,760.80x = 118,690,492,119.36
  5. Step 5: Solve for x
    x = 118,690,492,119.36/308,760.80
  6. Step 6: Final answer
    x = 384,409.20

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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.