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Finding the Fourth Proportional to 308,586.80, 462,880.20 and 256,098.80

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Solution

The fourth proportional to 308,586.80, 462,880.20 and 256,098.80 is: 384,148.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,586.80 : 462,880.20 = 256,098.80 : x
  2. Step 2: Convert to fraction form
    308,586.80/462,880.20 = 256,098.80/x
  3. Step 3: Cross multiply
    308,586.80x = 462,880.20 × 256,098.80
  4. Step 4: Simplify right side
    308,586.80x = 118,543,063,763.76
  5. Step 5: Solve for x
    x = 118,543,063,763.76/308,586.80
  6. Step 6: Final answer
    x = 384,148.20

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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.