Home / 429,385.46-643,097.21-204,903.57

Finding the Fourth Proportional to 429,385.46, 643,097.21 and 204,903.57

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Solution

The fourth proportional to 429,385.46, 643,097.21 and 204,903.57 is: 306,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,385.46 : 643,097.21 = 204,903.57 : x
  2. Step 2: Convert to fraction form
    429,385.46/643,097.21 = 204,903.57/x
  3. Step 3: Cross multiply
    429,385.46x = 643,097.21 × 204,903.57
  4. Step 4: Simplify right side
    429,385.46x = 131,772,914,698.30
  5. Step 5: Solve for x
    x = 131,772,914,698.30/429,385.46
  6. Step 6: Final answer
    x = 306,887.23

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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.