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Finding the Fourth Proportional to 260,719,394.42, 359,786,978.01 and 141,638,909.31

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Solution

The fourth proportional to 260,719,394.42, 359,786,978.01 and 141,638,909.31 is: 195,458,551.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,719,394.42 : 359,786,978.01 = 141,638,909.31 : x
  2. Step 2: Convert to fraction form
    260,719,394.42/359,786,978.01 = 141,638,909.31/x
  3. Step 3: Cross multiply
    260,719,394.42x = 359,786,978.01 × 141,638,909.31
  4. Step 4: Simplify right side
    260,719,394.42x = 50,959,835,149,277,352
  5. Step 5: Solve for x
    x = 50,959,835,149,277,352/260,719,394.42
  6. Step 6: Final answer
    x = 195,458,551.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.