Home / 210,015,509.30-314,928,785.55-80,580,101.30

Finding the Fourth Proportional to 210,015,509.30, 314,928,785.55 and 80,580,101.30

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Solution

The fourth proportional to 210,015,509.30, 314,928,785.55 and 80,580,101.30 is: 120,833,901.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015,509.30 : 314,928,785.55 = 80,580,101.30 : x
  2. Step 2: Convert to fraction form
    210,015,509.30/314,928,785.55 = 80,580,101.30/x
  3. Step 3: Cross multiply
    210,015,509.30x = 314,928,785.55 × 80,580,101.30
  4. Step 4: Simplify right side
    210,015,509.30x = 25,376,993,441,904,976
  5. Step 5: Solve for x
    x = 25,376,993,441,904,976/210,015,509.30
  6. Step 6: Final answer
    x = 120,833,901.87

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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.