Home / 429,009.18-643,261.43-162,788.41

Finding the Fourth Proportional to 429,009.18, 643,261.43 and 162,788.41

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Solution

The fourth proportional to 429,009.18, 643,261.43 and 162,788.41 is: 244,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,009.18 : 643,261.43 = 162,788.41 : x
  2. Step 2: Convert to fraction form
    429,009.18/643,261.43 = 162,788.41/x
  3. Step 3: Cross multiply
    429,009.18x = 643,261.43 × 162,788.41
  4. Step 4: Simplify right side
    429,009.18x = 104,715,505,404.03
  5. Step 5: Solve for x
    x = 104,715,505,404.03/429,009.18
  6. Step 6: Final answer
    x = 244,086.86

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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.