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Finding the Fourth Proportional to 308,986.80, 463,480.20 and 302,074.80

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Solution

The fourth proportional to 308,986.80, 463,480.20 and 302,074.80 is: 453,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,986.80 : 463,480.20 = 302,074.80 : x
  2. Step 2: Convert to fraction form
    308,986.80/463,480.20 = 302,074.80/x
  3. Step 3: Cross multiply
    308,986.80x = 463,480.20 × 302,074.80
  4. Step 4: Simplify right side
    308,986.80x = 140,005,688,718.96
  5. Step 5: Solve for x
    x = 140,005,688,718.96/308,986.80
  6. Step 6: Final answer
    x = 453,112.20

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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.