Home / 543,628.12-815,378.81-144,299.92

Finding the Fourth Proportional to 543,628.12, 815,378.81 and 144,299.92

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Solution

The fourth proportional to 543,628.12, 815,378.81 and 144,299.92 is: 216,433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,628.12 : 815,378.81 = 144,299.92 : x
  2. Step 2: Convert to fraction form
    543,628.12/815,378.81 = 144,299.92/x
  3. Step 3: Cross multiply
    543,628.12x = 815,378.81 × 144,299.92
  4. Step 4: Simplify right side
    543,628.12x = 117,659,092,975.80
  5. Step 5: Solve for x
    x = 117,659,092,975.80/543,628.12
  6. Step 6: Final answer
    x = 216,433.05

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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.