Home / 405,364,638.32-559,388,214.18-219,721,668.20

Finding the Fourth Proportional to 405,364,638.32, 559,388,214.18 and 219,721,668.20

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Solution

The fourth proportional to 405,364,638.32, 559,388,214.18 and 219,721,668.20 is: 303,207,778.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,364,638.32 : 559,388,214.18 = 219,721,668.20 : x
  2. Step 2: Convert to fraction form
    405,364,638.32/559,388,214.18 = 219,721,668.20/x
  3. Step 3: Cross multiply
    405,364,638.32x = 559,388,214.18 × 219,721,668.20
  4. Step 4: Simplify right side
    405,364,638.32x = 122,909,711,591,048,480
  5. Step 5: Solve for x
    x = 122,909,711,591,048,480/405,364,638.32
  6. Step 6: Final answer
    x = 303,207,778.80

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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.