Home / 405,016,128.64-558,922,276.38-219,377,144.53

Finding the Fourth Proportional to 405,016,128.64, 558,922,276.38 and 219,377,144.53

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Solution

The fourth proportional to 405,016,128.64, 558,922,276.38 and 219,377,144.53 is: 302,740,469.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,016,128.64 : 558,922,276.38 = 219,377,144.53 : x
  2. Step 2: Convert to fraction form
    405,016,128.64/558,922,276.38 = 219,377,144.53/x
  3. Step 3: Cross multiply
    405,016,128.64x = 558,922,276.38 × 219,377,144.53
  4. Step 4: Simplify right side
    405,016,128.64x = 122,614,773,006,451,872
  5. Step 5: Solve for x
    x = 122,614,773,006,451,872/405,016,128.64
  6. Step 6: Final answer
    x = 302,740,469.67

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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.