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Finding the Fourth Proportional to 305,532, 421,637.04 and 171,398.88

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Solution

The fourth proportional to 305,532, 421,637.04 and 171,398.88 is: 236,532.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,532 : 421,637.04 = 171,398.88 : x
  2. Step 2: Convert to fraction form
    305,532/421,637.04 = 171,398.88/x
  3. Step 3: Cross multiply
    305,532x = 421,637.04 × 171,398.88
  4. Step 4: Simplify right side
    305,532x = 72,268,116,422.52
  5. Step 5: Solve for x
    x = 72,268,116,422.52/305,532
  6. Step 6: Final answer
    x = 236,532.07

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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.