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Finding the Fourth Proportional to 359,362.60, 539,108.70 and 149,021.80

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Solution

The fourth proportional to 359,362.60, 539,108.70 and 149,021.80 is: 223,559.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,362.60 : 539,108.70 = 149,021.80 : x
  2. Step 2: Convert to fraction form
    359,362.60/539,108.70 = 149,021.80/x
  3. Step 3: Cross multiply
    359,362.60x = 539,108.70 × 149,021.80
  4. Step 4: Simplify right side
    359,362.60x = 80,338,948,869.66
  5. Step 5: Solve for x
    x = 80,338,948,869.66/359,362.60
  6. Step 6: Final answer
    x = 223,559.57

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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.