Home / 209,218,115.37-288,600,771.82-130,765,515.69

Finding the Fourth Proportional to 209,218,115.37, 288,600,771.82 and 130,765,515.69

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Solution

The fourth proportional to 209,218,115.37, 288,600,771.82 and 130,765,515.69 is: 180,381,267.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,218,115.37 : 288,600,771.82 = 130,765,515.69 : x
  2. Step 2: Convert to fraction form
    209,218,115.37/288,600,771.82 = 130,765,515.69/x
  3. Step 3: Cross multiply
    209,218,115.37x = 288,600,771.82 × 130,765,515.69
  4. Step 4: Simplify right side
    209,218,115.37x = 37,739,028,755,574,320
  5. Step 5: Solve for x
    x = 37,739,028,755,574,320/209,218,115.37
  6. Step 6: Final answer
    x = 180,381,267.12

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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.