Home / 209,079,857.42-288,566,317.89-121,022,407.40

Finding the Fourth Proportional to 209,079,857.42, 288,566,317.89 and 121,022,407.40

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Solution

The fourth proportional to 209,079,857.42, 288,566,317.89 and 121,022,407.40 is: 167,031,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,079,857.42 : 288,566,317.89 = 121,022,407.40 : x
  2. Step 2: Convert to fraction form
    209,079,857.42/288,566,317.89 = 121,022,407.40/x
  3. Step 3: Cross multiply
    209,079,857.42x = 288,566,317.89 × 121,022,407.40
  4. Step 4: Simplify right side
    209,079,857.42x = 34,922,990,486,322,904
  5. Step 5: Solve for x
    x = 34,922,990,486,322,904/209,079,857.42
  6. Step 6: Final answer
    x = 167,031,826.59

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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.