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Finding the Fourth Proportional to 401,794.80, 602,692.20 and 338,809.20

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Solution

The fourth proportional to 401,794.80, 602,692.20 and 338,809.20 is: 508,213.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,794.80 : 602,692.20 = 338,809.20 : x
  2. Step 2: Convert to fraction form
    401,794.80/602,692.20 = 338,809.20/x
  3. Step 3: Cross multiply
    401,794.80x = 602,692.20 × 338,809.20
  4. Step 4: Simplify right side
    401,794.80x = 204,197,662,128.24
  5. Step 5: Solve for x
    x = 204,197,662,128.24/401,794.80
  6. Step 6: Final answer
    x = 508,213.80

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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.