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Finding the Fourth Proportional to 248,409.51, 372,620.43 and 90,637.98

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Solution

The fourth proportional to 248,409.51, 372,620.43 and 90,637.98 is: 135,959.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,409.51 : 372,620.43 = 90,637.98 : x
  2. Step 2: Convert to fraction form
    248,409.51/372,620.43 = 90,637.98/x
  3. Step 3: Cross multiply
    248,409.51x = 372,620.43 × 90,637.98
  4. Step 4: Simplify right side
    248,409.51x = 33,773,563,081.93
  5. Step 5: Solve for x
    x = 33,773,563,081.93/248,409.51
  6. Step 6: Final answer
    x = 135,959.22

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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.