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Finding the Fourth Proportional to 343,616.24, 515,300.84 and 118,915.64

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Solution

The fourth proportional to 343,616.24, 515,300.84 and 118,915.64 is: 178,330.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,616.24 : 515,300.84 = 118,915.64 : x
  2. Step 2: Convert to fraction form
    343,616.24/515,300.84 = 118,915.64/x
  3. Step 3: Cross multiply
    343,616.24x = 515,300.84 × 118,915.64
  4. Step 4: Simplify right side
    343,616.24x = 61,277,329,181.14
  5. Step 5: Solve for x
    x = 61,277,329,181.14/343,616.24
  6. Step 6: Final answer
    x = 178,330.71

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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.