Home / 309,729,109.92-427,516,431.36-202,454,015.60

Finding the Fourth Proportional to 309,729,109.92, 427,516,431.36 and 202,454,015.60

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Solution

The fourth proportional to 309,729,109.92, 427,516,431.36 and 202,454,015.60 is: 279,445,539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,729,109.92 : 427,516,431.36 = 202,454,015.60 : x
  2. Step 2: Convert to fraction form
    309,729,109.92/427,516,431.36 = 202,454,015.60/x
  3. Step 3: Cross multiply
    309,729,109.92x = 427,516,431.36 × 202,454,015.60
  4. Step 4: Simplify right side
    309,729,109.92x = 86,552,418,263,813,776
  5. Step 5: Solve for x
    x = 86,552,418,263,813,776/309,729,109.92
  6. Step 6: Final answer
    x = 279,445,539.64

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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.