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Finding the Fourth Proportional to 272,490.63, 408,763.82 and 104,152.65

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Solution

The fourth proportional to 272,490.63, 408,763.82 and 104,152.65 is: 156,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,490.63 : 408,763.82 = 104,152.65 : x
  2. Step 2: Convert to fraction form
    272,490.63/408,763.82 = 104,152.65/x
  3. Step 3: Cross multiply
    272,490.63x = 408,763.82 × 104,152.65
  4. Step 4: Simplify right side
    272,490.63x = 42,573,834,556.36
  5. Step 5: Solve for x
    x = 42,573,834,556.36/272,490.63
  6. Step 6: Final answer
    x = 156,239.63

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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.