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Finding the Fourth Proportional to 308,518.20, 462,809.70 and 98,107.20

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Solution

The fourth proportional to 308,518.20, 462,809.70 and 98,107.20 is: 147,171.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,518.20 : 462,809.70 = 98,107.20 : x
  2. Step 2: Convert to fraction form
    308,518.20/462,809.70 = 98,107.20/x
  3. Step 3: Cross multiply
    308,518.20x = 462,809.70 × 98,107.20
  4. Step 4: Simplify right side
    308,518.20x = 45,404,963,799.84
  5. Step 5: Solve for x
    x = 45,404,963,799.84/308,518.20
  6. Step 6: Final answer
    x = 147,171.10

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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.