Home / 213,654,829.20-320,482,243.80-77,291,005.20

Finding the Fourth Proportional to 213,654,829.20, 320,482,243.80 and 77,291,005.20

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Solution

The fourth proportional to 213,654,829.20, 320,482,243.80 and 77,291,005.20 is: 115,936,507.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,654,829.20 : 320,482,243.80 = 77,291,005.20 : x
  2. Step 2: Convert to fraction form
    213,654,829.20/320,482,243.80 = 77,291,005.20/x
  3. Step 3: Cross multiply
    213,654,829.20x = 320,482,243.80 × 77,291,005.20
  4. Step 4: Simplify right side
    213,654,829.20x = 24,770,394,772,053,468
  5. Step 5: Solve for x
    x = 24,770,394,772,053,468/213,654,829.20
  6. Step 6: Final answer
    x = 115,936,507.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.