Home / 260,495,998.80-390,743,998.20-138,051,992.40

Finding the Fourth Proportional to 260,495,998.80, 390,743,998.20 and 138,051,992.40

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Solution

The fourth proportional to 260,495,998.80, 390,743,998.20 and 138,051,992.40 is: 207,077,988.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,495,998.80 : 390,743,998.20 = 138,051,992.40 : x
  2. Step 2: Convert to fraction form
    260,495,998.80/390,743,998.20 = 138,051,992.40/x
  3. Step 3: Cross multiply
    260,495,998.80x = 390,743,998.20 × 138,051,992.40
  4. Step 4: Simplify right side
    260,495,998.80x = 53,942,987,469,852,016
  5. Step 5: Solve for x
    x = 53,942,987,469,852,016/260,495,998.80
  6. Step 6: Final answer
    x = 207,077,988.60

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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.