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Finding the Fourth Proportional to 308,842.40, 463,285.20 and 121,829.60

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Solution

The fourth proportional to 308,842.40, 463,285.20 and 121,829.60 is: 182,752.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,842.40 : 463,285.20 = 121,829.60 : x
  2. Step 2: Convert to fraction form
    308,842.40/463,285.20 = 121,829.60/x
  3. Step 3: Cross multiply
    308,842.40x = 463,285.20 × 121,829.60
  4. Step 4: Simplify right side
    308,842.40x = 56,441,850,601.92
  5. Step 5: Solve for x
    x = 56,441,850,601.92/308,842.40
  6. Step 6: Final answer
    x = 182,752.92

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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.