Home / 335,665.12-503,499-135,989.28

Finding the Fourth Proportional to 335,665.12, 503,499 and 135,989.28

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Solution

The fourth proportional to 335,665.12, 503,499 and 135,989.28 is: 203,984.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,665.12 : 503,499 = 135,989.28 : x
  2. Step 2: Convert to fraction form
    335,665.12/503,499 = 135,989.28/x
  3. Step 3: Cross multiply
    335,665.12x = 503,499 × 135,989.28
  4. Step 4: Simplify right side
    335,665.12x = 68,470,466,490.72
  5. Step 5: Solve for x
    x = 68,470,466,490.72/335,665.12
  6. Step 6: Final answer
    x = 203,984.45

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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.