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Finding the Fourth Proportional to 289,148, 399,270.48 and 181,897.52

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Solution

The fourth proportional to 289,148, 399,270.48 and 181,897.52 is: 251,173.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,148 : 399,270.48 = 181,897.52 : x
  2. Step 2: Convert to fraction form
    289,148/399,270.48 = 181,897.52/x
  3. Step 3: Cross multiply
    289,148x = 399,270.48 × 181,897.52
  4. Step 4: Simplify right side
    289,148x = 72,626,310,121.21
  5. Step 5: Solve for x
    x = 72,626,310,121.21/289,148
  6. Step 6: Final answer
    x = 251,173.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.