Home / 209,165,641.20-313,748,461.80-172,815,076.80

Finding the Fourth Proportional to 209,165,641.20, 313,748,461.80 and 172,815,076.80

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Solution

The fourth proportional to 209,165,641.20, 313,748,461.80 and 172,815,076.80 is: 259,222,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,165,641.20 : 313,748,461.80 = 172,815,076.80 : x
  2. Step 2: Convert to fraction form
    209,165,641.20/313,748,461.80 = 172,815,076.80/x
  3. Step 3: Cross multiply
    209,165,641.20x = 313,748,461.80 × 172,815,076.80
  4. Step 4: Simplify right side
    209,165,641.20x = 54,220,464,521,848,872
  5. Step 5: Solve for x
    x = 54,220,464,521,848,872/209,165,641.20
  6. Step 6: Final answer
    x = 259,222,615.20

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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.