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Finding the Fourth Proportional to 359,978.92, 539,961.29 and 107,430.54

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Solution

The fourth proportional to 359,978.92, 539,961.29 and 107,430.54 is: 161,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,978.92 : 539,961.29 = 107,430.54 : x
  2. Step 2: Convert to fraction form
    359,978.92/539,961.29 = 107,430.54/x
  3. Step 3: Cross multiply
    359,978.92x = 539,961.29 × 107,430.54
  4. Step 4: Simplify right side
    359,978.92x = 58,008,330,804.65
  5. Step 5: Solve for x
    x = 58,008,330,804.65/359,978.92
  6. Step 6: Final answer
    x = 161,143.69

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.