Home / 429,180.51-643,795.38-113,629.22

Finding the Fourth Proportional to 429,180.51, 643,795.38 and 113,629.22

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Solution

The fourth proportional to 429,180.51, 643,795.38 and 113,629.22 is: 170,450.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,180.51 : 643,795.38 = 113,629.22 : x
  2. Step 2: Convert to fraction form
    429,180.51/643,795.38 = 113,629.22/x
  3. Step 3: Cross multiply
    429,180.51x = 643,795.38 × 113,629.22
  4. Step 4: Simplify right side
    429,180.51x = 73,153,966,064.26
  5. Step 5: Solve for x
    x = 73,153,966,064.26/429,180.51
  6. Step 6: Final answer
    x = 170,450.34

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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.