Home / 209,915,178.46-289,787,822.54-130,555,819.69

Finding the Fourth Proportional to 209,915,178.46, 289,787,822.54 and 130,555,819.69

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Solution

The fourth proportional to 209,915,178.46, 289,787,822.54 and 130,555,819.69 is: 180,232,258.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,915,178.46 : 289,787,822.54 = 130,555,819.69 : x
  2. Step 2: Convert to fraction form
    209,915,178.46/289,787,822.54 = 130,555,819.69/x
  3. Step 3: Cross multiply
    209,915,178.46x = 289,787,822.54 × 130,555,819.69
  4. Step 4: Simplify right side
    209,915,178.46x = 37,833,486,707,002,296
  5. Step 5: Solve for x
    x = 37,833,486,707,002,296/209,915,178.46
  6. Step 6: Final answer
    x = 180,232,258.50

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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.