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Finding the Fourth Proportional to 279,939,519.60, 419,909,279.40 and 159,007,167.60

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Solution

The fourth proportional to 279,939,519.60, 419,909,279.40 and 159,007,167.60 is: 238,510,751.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939,519.60 : 419,909,279.40 = 159,007,167.60 : x
  2. Step 2: Convert to fraction form
    279,939,519.60/419,909,279.40 = 159,007,167.60/x
  3. Step 3: Cross multiply
    279,939,519.60x = 419,909,279.40 × 159,007,167.60
  4. Step 4: Simplify right side
    279,939,519.60x = 66,768,585,166,351,024
  5. Step 5: Solve for x
    x = 66,768,585,166,351,024/279,939,519.60
  6. Step 6: Final answer
    x = 238,510,751.40

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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.