Home / 209,987,998.80-314,981,998.20-129,254,456.40

Finding the Fourth Proportional to 209,987,998.80, 314,981,998.20 and 129,254,456.40

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Solution

The fourth proportional to 209,987,998.80, 314,981,998.20 and 129,254,456.40 is: 193,881,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,987,998.80 : 314,981,998.20 = 129,254,456.40 : x
  2. Step 2: Convert to fraction form
    209,987,998.80/314,981,998.20 = 129,254,456.40/x
  3. Step 3: Cross multiply
    209,987,998.80x = 314,981,998.20 × 129,254,456.40
  4. Step 4: Simplify right side
    209,987,998.80x = 40,712,826,953,126,776
  5. Step 5: Solve for x
    x = 40,712,826,953,126,776/209,987,998.80
  6. Step 6: Final answer
    x = 193,881,684.60

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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.