Home / 389,172.40-537,057.03-219,405.31

Finding the Fourth Proportional to 389,172.40, 537,057.03 and 219,405.31

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Solution

The fourth proportional to 389,172.40, 537,057.03 and 219,405.31 is: 302,778.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,172.40 : 537,057.03 = 219,405.31 : x
  2. Step 2: Convert to fraction form
    389,172.40/537,057.03 = 219,405.31/x
  3. Step 3: Cross multiply
    389,172.40x = 537,057.03 × 219,405.31
  4. Step 4: Simplify right side
    389,172.40x = 117,833,163,634.96
  5. Step 5: Solve for x
    x = 117,833,163,634.96/389,172.40
  6. Step 6: Final answer
    x = 302,778.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.