Home / 389,811.20-537,926.40-220,083.20

Finding the Fourth Proportional to 389,811.20, 537,926.40 and 220,083.20

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Solution

The fourth proportional to 389,811.20, 537,926.40 and 220,083.20 is: 303,707.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,811.20 : 537,926.40 = 220,083.20 : x
  2. Step 2: Convert to fraction form
    389,811.20/537,926.40 = 220,083.20/x
  3. Step 3: Cross multiply
    389,811.20x = 537,926.40 × 220,083.20
  4. Step 4: Simplify right side
    389,811.20x = 118,388,563,476.48
  5. Step 5: Solve for x
    x = 118,388,563,476.48/389,811.20
  6. Step 6: Final answer
    x = 303,707.44

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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.