Home / 209,557,456.38-289,204,574.31-121,474,194.30

Finding the Fourth Proportional to 209,557,456.38, 289,204,574.31 and 121,474,194.30

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Solution

The fourth proportional to 209,557,456.38, 289,204,574.31 and 121,474,194.30 is: 167,643,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,557,456.38 : 289,204,574.31 = 121,474,194.30 : x
  2. Step 2: Convert to fraction form
    209,557,456.38/289,204,574.31 = 121,474,194.30/x
  3. Step 3: Cross multiply
    209,557,456.38x = 289,204,574.31 × 121,474,194.30
  4. Step 4: Simplify right side
    209,557,456.38x = 35,130,892,652,181,728
  5. Step 5: Solve for x
    x = 35,130,892,652,181,728/209,557,456.38
  6. Step 6: Final answer
    x = 167,643,248.11

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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.