Home / 209,218,112.87-288,600,768.38-130,765,513.19

Finding the Fourth Proportional to 209,218,112.87, 288,600,768.38 and 130,765,513.19

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Solution

The fourth proportional to 209,218,112.87, 288,600,768.38 and 130,765,513.19 is: 180,381,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,218,112.87 : 288,600,768.38 = 130,765,513.19 : x
  2. Step 2: Convert to fraction form
    209,218,112.87/288,600,768.38 = 130,765,513.19/x
  3. Step 3: Cross multiply
    209,218,112.87x = 288,600,768.38 × 130,765,513.19
  4. Step 4: Simplify right side
    209,218,112.87x = 37,739,027,583,122,936
  5. Step 5: Solve for x
    x = 37,739,027,583,122,936/209,218,112.87
  6. Step 6: Final answer
    x = 180,381,263.68

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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.