Home / 389,756.41-537,859.78-219,997.69

Finding the Fourth Proportional to 389,756.41, 537,859.78 and 219,997.69

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Solution

The fourth proportional to 389,756.41, 537,859.78 and 219,997.69 is: 303,594.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,756.41 : 537,859.78 = 219,997.69 : x
  2. Step 2: Convert to fraction form
    389,756.41/537,859.78 = 219,997.69/x
  3. Step 3: Cross multiply
    389,756.41x = 537,859.78 × 219,997.69
  4. Step 4: Simplify right side
    389,756.41x = 118,327,909,143.91
  5. Step 5: Solve for x
    x = 118,327,909,143.91/389,756.41
  6. Step 6: Final answer
    x = 303,594.52

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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.