Home / 291,155,428.05-436,733,142.08-138,100,420.05

Finding the Fourth Proportional to 291,155,428.05, 436,733,142.08 and 138,100,420.05

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Solution

The fourth proportional to 291,155,428.05, 436,733,142.08 and 138,100,420.05 is: 207,150,630.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,155,428.05 : 436,733,142.08 = 138,100,420.05 : x
  2. Step 2: Convert to fraction form
    291,155,428.05/436,733,142.08 = 138,100,420.05/x
  3. Step 3: Cross multiply
    291,155,428.05x = 436,733,142.08 × 138,100,420.05
  4. Step 4: Simplify right side
    291,155,428.05x = 60,313,030,370,313,832
  5. Step 5: Solve for x
    x = 60,313,030,370,313,832/291,155,428.05
  6. Step 6: Final answer
    x = 207,150,630.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.