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Finding the Fourth Proportional to 228,329.61, 342,393.17 and 121,693.70

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Solution

The fourth proportional to 228,329.61, 342,393.17 and 121,693.70 is: 182,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,329.61 : 342,393.17 = 121,693.70 : x
  2. Step 2: Convert to fraction form
    228,329.61/342,393.17 = 121,693.70/x
  3. Step 3: Cross multiply
    228,329.61x = 342,393.17 × 121,693.70
  4. Step 4: Simplify right side
    228,329.61x = 41,667,089,391.59
  5. Step 5: Solve for x
    x = 41,667,089,391.59/228,329.61
  6. Step 6: Final answer
    x = 182,486.58

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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.