Home / 209,664,419.80-314,496,629.70-172,676,126.20

Finding the Fourth Proportional to 209,664,419.80, 314,496,629.70 and 172,676,126.20

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Solution

The fourth proportional to 209,664,419.80, 314,496,629.70 and 172,676,126.20 is: 259,014,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,664,419.80 : 314,496,629.70 = 172,676,126.20 : x
  2. Step 2: Convert to fraction form
    209,664,419.80/314,496,629.70 = 172,676,126.20/x
  3. Step 3: Cross multiply
    209,664,419.80x = 314,496,629.70 × 172,676,126.20
  4. Step 4: Simplify right side
    209,664,419.80x = 54,306,059,719,551,864
  5. Step 5: Solve for x
    x = 54,306,059,719,551,864/209,664,419.80
  6. Step 6: Final answer
    x = 259,014,189.30

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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.