Home / 395,298,756.78-545,512,336.65-219,098,115.42

Finding the Fourth Proportional to 395,298,756.78, 545,512,336.65 and 219,098,115.42

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Solution

The fourth proportional to 395,298,756.78, 545,512,336.65 and 219,098,115.42 is: 302,355,428.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,298,756.78 : 545,512,336.65 = 219,098,115.42 : x
  2. Step 2: Convert to fraction form
    395,298,756.78/545,512,336.65 = 219,098,115.42/x
  3. Step 3: Cross multiply
    395,298,756.78x = 545,512,336.65 × 219,098,115.42
  4. Step 4: Simplify right side
    395,298,756.78x = 119,520,724,898,375,584
  5. Step 5: Solve for x
    x = 119,520,724,898,375,584/395,298,756.78
  6. Step 6: Final answer
    x = 302,355,428.26

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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.