Home / 429,743.16-644,517.54-163,408.68

Finding the Fourth Proportional to 429,743.16, 644,517.54 and 163,408.68

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Solution

The fourth proportional to 429,743.16, 644,517.54 and 163,408.68 is: 245,076.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,743.16 : 644,517.54 = 163,408.68 : x
  2. Step 2: Convert to fraction form
    429,743.16/644,517.54 = 163,408.68/x
  3. Step 3: Cross multiply
    429,743.16x = 644,517.54 × 163,408.68
  4. Step 4: Simplify right side
    429,743.16x = 105,319,760,448.25
  5. Step 5: Solve for x
    x = 105,319,760,448.25/429,743.16
  6. Step 6: Final answer
    x = 245,076.06

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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.