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Finding the Fourth Proportional to 258,694,779.60, 388,042,169.40 and 258,694,779.60

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Solution

The fourth proportional to 258,694,779.60, 388,042,169.40 and 258,694,779.60 is: 388,042,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,694,779.60 : 388,042,169.40 = 258,694,779.60 : x
  2. Step 2: Convert to fraction form
    258,694,779.60/388,042,169.40 = 258,694,779.60/x
  3. Step 3: Cross multiply
    258,694,779.60x = 388,042,169.40 × 258,694,779.60
  4. Step 4: Simplify right side
    258,694,779.60x = 100,384,483,488,438,848
  5. Step 5: Solve for x
    x = 100,384,483,488,438,848/258,694,779.60
  6. Step 6: Final answer
    x = 388,042,169.40

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1.5x scale

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.