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Finding the Fourth Proportional to 308,969.60, 463,454.40 and 98,628.80

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Solution

The fourth proportional to 308,969.60, 463,454.40 and 98,628.80 is: 147,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,969.60 : 463,454.40 = 98,628.80 : x
  2. Step 2: Convert to fraction form
    308,969.60/463,454.40 = 98,628.80/x
  3. Step 3: Cross multiply
    308,969.60x = 463,454.40 × 98,628.80
  4. Step 4: Simplify right side
    308,969.60x = 45,709,951,326.72
  5. Step 5: Solve for x
    x = 45,709,951,326.72/308,969.60
  6. Step 6: Final answer
    x = 147,943.20

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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.