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Finding the Fourth Proportional to 359,290.20, 538,235.22 and 218,700.12

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Solution

The fourth proportional to 359,290.20, 538,235.22 and 218,700.12 is: 327,624.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,290.20 : 538,235.22 = 218,700.12 : x
  2. Step 2: Convert to fraction form
    359,290.20/538,235.22 = 218,700.12/x
  3. Step 3: Cross multiply
    359,290.20x = 538,235.22 × 218,700.12
  4. Step 4: Simplify right side
    359,290.20x = 117,712,107,202.23
  5. Step 5: Solve for x
    x = 117,712,107,202.23/359,290.20
  6. Step 6: Final answer
    x = 327,624.04

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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.