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Finding the Fourth Proportional to 308,549.45, 462,858.20 and 98,138.18

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Solution

The fourth proportional to 308,549.45, 462,858.20 and 98,138.18 is: 147,218.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,549.45 : 462,858.20 = 98,138.18 : x
  2. Step 2: Convert to fraction form
    308,549.45/462,858.20 = 98,138.18/x
  3. Step 3: Cross multiply
    308,549.45x = 462,858.20 × 98,138.18
  4. Step 4: Simplify right side
    308,549.45x = 45,424,061,346.08
  5. Step 5: Solve for x
    x = 45,424,061,346.08/308,549.45
  6. Step 6: Final answer
    x = 147,218.09

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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.