Home / 429,231.40-643,591.10-263,138.60

Finding the Fourth Proportional to 429,231.40, 643,591.10 and 263,138.60

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Solution

The fourth proportional to 429,231.40, 643,591.10 and 263,138.60 is: 394,550.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,231.40 : 643,591.10 = 263,138.60 : x
  2. Step 2: Convert to fraction form
    429,231.40/643,591.10 = 263,138.60/x
  3. Step 3: Cross multiply
    429,231.40x = 643,591.10 × 263,138.60
  4. Step 4: Simplify right side
    429,231.40x = 169,353,661,026.46
  5. Step 5: Solve for x
    x = 169,353,661,026.46/429,231.40
  6. Step 6: Final answer
    x = 394,550.96

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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.