Home / 405,490.41-608,171.72-135,616.50

Finding the Fourth Proportional to 405,490.41, 608,171.72 and 135,616.50

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Solution

The fourth proportional to 405,490.41, 608,171.72 and 135,616.50 is: 203,403.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,490.41 : 608,171.72 = 135,616.50 : x
  2. Step 2: Convert to fraction form
    405,490.41/608,171.72 = 135,616.50/x
  3. Step 3: Cross multiply
    405,490.41x = 608,171.72 × 135,616.50
  4. Step 4: Simplify right side
    405,490.41x = 82,478,119,387.30
  5. Step 5: Solve for x
    x = 82,478,119,387.30/405,490.41
  6. Step 6: Final answer
    x = 203,403.38

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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.