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Finding the Fourth Proportional to 243,019.20, 364,237.20 and 124,629.60

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Solution

The fourth proportional to 243,019.20, 364,237.20 and 124,629.60 is: 186,794.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,019.20 : 364,237.20 = 124,629.60 : x
  2. Step 2: Convert to fraction form
    243,019.20/364,237.20 = 124,629.60/x
  3. Step 3: Cross multiply
    243,019.20x = 364,237.20 × 124,629.60
  4. Step 4: Simplify right side
    243,019.20x = 45,394,736,541.12
  5. Step 5: Solve for x
    x = 45,394,736,541.12/243,019.20
  6. Step 6: Final answer
    x = 186,794.86

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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.