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Finding the Fourth Proportional to 359,619.70, 539,235.15 and 149,278.90

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Solution

The fourth proportional to 359,619.70, 539,235.15 and 149,278.90 is: 223,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,619.70 : 539,235.15 = 149,278.90 : x
  2. Step 2: Convert to fraction form
    359,619.70/539,235.15 = 149,278.90/x
  3. Step 3: Cross multiply
    359,619.70x = 539,235.15 × 149,278.90
  4. Step 4: Simplify right side
    359,619.70x = 80,496,430,033.34
  5. Step 5: Solve for x
    x = 80,496,430,033.34/359,619.70
  6. Step 6: Final answer
    x = 223,837.65

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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.