Home / 386,919.12-580,351.16-102,603.36

Finding the Fourth Proportional to 386,919.12, 580,351.16 and 102,603.36

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Solution

The fourth proportional to 386,919.12, 580,351.16 and 102,603.36 is: 153,897.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,919.12 : 580,351.16 = 102,603.36 : x
  2. Step 2: Convert to fraction form
    386,919.12/580,351.16 = 102,603.36/x
  3. Step 3: Cross multiply
    386,919.12x = 580,351.16 × 102,603.36
  4. Step 4: Simplify right side
    386,919.12x = 59,545,978,995.90
  5. Step 5: Solve for x
    x = 59,545,978,995.90/386,919.12
  6. Step 6: Final answer
    x = 153,897.74

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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.