Home / 378,946.59-522,945.23-209,179.50

Finding the Fourth Proportional to 378,946.59, 522,945.23 and 209,179.50

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Solution

The fourth proportional to 378,946.59, 522,945.23 and 209,179.50 is: 288,667.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,946.59 : 522,945.23 = 209,179.50 : x
  2. Step 2: Convert to fraction form
    378,946.59/522,945.23 = 209,179.50/x
  3. Step 3: Cross multiply
    378,946.59x = 522,945.23 × 209,179.50
  4. Step 4: Simplify right side
    378,946.59x = 109,389,420,692.89
  5. Step 5: Solve for x
    x = 109,389,420,692.89/378,946.59
  6. Step 6: Final answer
    x = 288,667.12

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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.