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Finding the Fourth Proportional to 359,415.40, 538,863.90 and 201,692.20

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Solution

The fourth proportional to 359,415.40, 538,863.90 and 201,692.20 is: 302,392.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,415.40 : 538,863.90 = 201,692.20 : x
  2. Step 2: Convert to fraction form
    359,415.40/538,863.90 = 201,692.20/x
  3. Step 3: Cross multiply
    359,415.40x = 538,863.90 × 201,692.20
  4. Step 4: Simplify right side
    359,415.40x = 108,684,645,491.58
  5. Step 5: Solve for x
    x = 108,684,645,491.58/359,415.40
  6. Step 6: Final answer
    x = 302,392.85

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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.