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Finding the Fourth Proportional to 359,620.90, 539,502.40 and 131,918.63

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Solution

The fourth proportional to 359,620.90, 539,502.40 and 131,918.63 is: 197,904.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,620.90 : 539,502.40 = 131,918.63 : x
  2. Step 2: Convert to fraction form
    359,620.90/539,502.40 = 131,918.63/x
  3. Step 3: Cross multiply
    359,620.90x = 539,502.40 × 131,918.63
  4. Step 4: Simplify right side
    359,620.90x = 71,170,414,792.20
  5. Step 5: Solve for x
    x = 71,170,414,792.20/359,620.90
  6. Step 6: Final answer
    x = 197,904.00

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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.