Home / 429,395.93-643,112.86-204,914

Finding the Fourth Proportional to 429,395.93, 643,112.86 and 204,914

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Solution

The fourth proportional to 429,395.93, 643,112.86 and 204,914 is: 306,902.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,395.93 : 643,112.86 = 204,914 : x
  2. Step 2: Convert to fraction form
    429,395.93/643,112.86 = 204,914/x
  3. Step 3: Cross multiply
    429,395.93x = 643,112.86 × 204,914
  4. Step 4: Simplify right side
    429,395.93x = 131,782,828,594.04
  5. Step 5: Solve for x
    x = 131,782,828,594.04/429,395.93
  6. Step 6: Final answer
    x = 306,902.84

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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.