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Finding the Fourth Proportional to 429,179.58, 643,793.96 and 113,628.28

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Solution

The fourth proportional to 429,179.58, 643,793.96 and 113,628.28 is: 170,448.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,179.58 : 643,793.96 = 113,628.28 : x
  2. Step 2: Convert to fraction form
    429,179.58/643,793.96 = 113,628.28/x
  3. Step 3: Cross multiply
    429,179.58x = 643,793.96 × 113,628.28
  4. Step 4: Simplify right side
    429,179.58x = 73,153,200,349.19
  5. Step 5: Solve for x
    x = 73,153,200,349.19/429,179.58
  6. Step 6: Final answer
    x = 170,448.93

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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.