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Finding the Fourth Proportional to 359,902.56, 539,798.50 and 120,020.66

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Solution

The fourth proportional to 359,902.56, 539,798.50 and 120,020.66 is: 180,012.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,902.56 : 539,798.50 = 120,020.66 : x
  2. Step 2: Convert to fraction form
    359,902.56/539,798.50 = 120,020.66/x
  3. Step 3: Cross multiply
    359,902.56x = 539,798.50 × 120,020.66
  4. Step 4: Simplify right side
    359,902.56x = 64,786,972,237.01
  5. Step 5: Solve for x
    x = 64,786,972,237.01/359,902.56
  6. Step 6: Final answer
    x = 180,012.54

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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.