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Finding the Fourth Proportional to 308,825.40, 463,259.70 and 121,812.60

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Solution

The fourth proportional to 308,825.40, 463,259.70 and 121,812.60 is: 182,727.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,825.40 : 463,259.70 = 121,812.60 : x
  2. Step 2: Convert to fraction form
    308,825.40/463,259.70 = 121,812.60/x
  3. Step 3: Cross multiply
    308,825.40x = 463,259.70 × 121,812.60
  4. Step 4: Simplify right side
    308,825.40x = 56,430,868,532.22
  5. Step 5: Solve for x
    x = 56,430,868,532.22/308,825.40
  6. Step 6: Final answer
    x = 182,727.42

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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.