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Finding the Fourth Proportional to 438,853.89, 658,333.60 and 154,485.38

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Solution

The fourth proportional to 438,853.89, 658,333.60 and 154,485.38 is: 231,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,853.89 : 658,333.60 = 154,485.38 : x
  2. Step 2: Convert to fraction form
    438,853.89/658,333.60 = 154,485.38/x
  3. Step 3: Cross multiply
    438,853.89x = 658,333.60 × 154,485.38
  4. Step 4: Simplify right side
    438,853.89x = 101,702,915,153.64
  5. Step 5: Solve for x
    x = 101,702,915,153.64/438,853.89
  6. Step 6: Final answer
    x = 231,746.64

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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.