Home / 378,249,636.72-521,997,478.56-219,467,769.72

Finding the Fourth Proportional to 378,249,636.72, 521,997,478.56 and 219,467,769.72

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Solution

The fourth proportional to 378,249,636.72, 521,997,478.56 and 219,467,769.72 is: 302,873,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,249,636.72 : 521,997,478.56 = 219,467,769.72 : x
  2. Step 2: Convert to fraction form
    378,249,636.72/521,997,478.56 = 219,467,769.72/x
  3. Step 3: Cross multiply
    378,249,636.72x = 521,997,478.56 × 219,467,769.72
  4. Step 4: Simplify right side
    378,249,636.72x = 114,561,622,419,026,720
  5. Step 5: Solve for x
    x = 114,561,622,419,026,720/378,249,636.72
  6. Step 6: Final answer
    x = 302,873,053.40

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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.