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Finding the Fourth Proportional to 308,328.36, 425,561.72 and 187,444

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Solution

The fourth proportional to 308,328.36, 425,561.72 and 187,444 is: 258,714.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,328.36 : 425,561.72 = 187,444 : x
  2. Step 2: Convert to fraction form
    308,328.36/425,561.72 = 187,444/x
  3. Step 3: Cross multiply
    308,328.36x = 425,561.72 × 187,444
  4. Step 4: Simplify right side
    308,328.36x = 79,768,991,043.68
  5. Step 5: Solve for x
    x = 79,768,991,043.68/308,328.36
  6. Step 6: Final answer
    x = 258,714.41

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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.