Home / 543,637.20-815,844.60-228,320.40

Finding the Fourth Proportional to 543,637.20, 815,844.60 and 228,320.40

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Solution

The fourth proportional to 543,637.20, 815,844.60 and 228,320.40 is: 342,643.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,637.20 : 815,844.60 = 228,320.40 : x
  2. Step 2: Convert to fraction form
    543,637.20/815,844.60 = 228,320.40/x
  3. Step 3: Cross multiply
    543,637.20x = 815,844.60 × 228,320.40
  4. Step 4: Simplify right side
    543,637.20x = 186,273,965,409.84
  5. Step 5: Solve for x
    x = 186,273,965,409.84/543,637.20
  6. Step 6: Final answer
    x = 342,643.89

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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.