Home / 209,765,870.86-289,385,068.65-200,040,500.50

Finding the Fourth Proportional to 209,765,870.86, 289,385,068.65 and 200,040,500.50

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Solution

The fourth proportional to 209,765,870.86, 289,385,068.65 and 200,040,500.50 is: 275,968,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,765,870.86 : 289,385,068.65 = 200,040,500.50 : x
  2. Step 2: Convert to fraction form
    209,765,870.86/289,385,068.65 = 200,040,500.50/x
  3. Step 3: Cross multiply
    209,765,870.86x = 289,385,068.65 × 200,040,500.50
  4. Step 4: Simplify right side
    209,765,870.86x = 57,888,733,969,972,856
  5. Step 5: Solve for x
    x = 57,888,733,969,972,856/209,765,870.86
  6. Step 6: Final answer
    x = 275,968,315.21

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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.