Home / 288,015,520.32-397,462,464.24-155,856,502.56

Finding the Fourth Proportional to 288,015,520.32, 397,462,464.24 and 155,856,502.56

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Solution

The fourth proportional to 288,015,520.32, 397,462,464.24 and 155,856,502.56 is: 215,082,539.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,015,520.32 : 397,462,464.24 = 155,856,502.56 : x
  2. Step 2: Convert to fraction form
    288,015,520.32/397,462,464.24 = 155,856,502.56/x
  3. Step 3: Cross multiply
    288,015,520.32x = 397,462,464.24 × 155,856,502.56
  4. Step 4: Simplify right side
    288,015,520.32x = 61,947,109,575,325,472
  5. Step 5: Solve for x
    x = 61,947,109,575,325,472/288,015,520.32
  6. Step 6: Final answer
    x = 215,082,539.67

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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.