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Finding the Fourth Proportional to 308,522.20, 462,815.70 and 98,111.20

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Solution

The fourth proportional to 308,522.20, 462,815.70 and 98,111.20 is: 147,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,522.20 : 462,815.70 = 98,111.20 : x
  2. Step 2: Convert to fraction form
    308,522.20/462,815.70 = 98,111.20/x
  3. Step 3: Cross multiply
    308,522.20x = 462,815.70 × 98,111.20
  4. Step 4: Simplify right side
    308,522.20x = 45,407,403,705.84
  5. Step 5: Solve for x
    x = 45,407,403,705.84/308,522.20
  6. Step 6: Final answer
    x = 147,177.10

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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.