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Finding the Fourth Proportional to 612,631.68, 918,843.84 and 169,296

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Solution

The fourth proportional to 612,631.68, 918,843.84 and 169,296 is: 253,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,631.68 : 918,843.84 = 169,296 : x
  2. Step 2: Convert to fraction form
    612,631.68/918,843.84 = 169,296/x
  3. Step 3: Cross multiply
    612,631.68x = 918,843.84 × 169,296
  4. Step 4: Simplify right side
    612,631.68x = 155,556,586,736.64
  5. Step 5: Solve for x
    x = 155,556,586,736.64/612,631.68
  6. Step 6: Final answer
    x = 253,915.35

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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.