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Finding the Fourth Proportional to 290,178.48, 400,632 and 236,592

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Solution

The fourth proportional to 290,178.48, 400,632 and 236,592 is: 326,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,178.48 : 400,632 = 236,592 : x
  2. Step 2: Convert to fraction form
    290,178.48/400,632 = 236,592/x
  3. Step 3: Cross multiply
    290,178.48x = 400,632 × 236,592
  4. Step 4: Simplify right side
    290,178.48x = 94,786,326,144
  5. Step 5: Solve for x
    x = 94,786,326,144/290,178.48
  6. Step 6: Final answer
    x = 326,648.37

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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.