Home / 420,470.94-630,768.82-136,066.16

Finding the Fourth Proportional to 420,470.94, 630,768.82 and 136,066.16

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Solution

The fourth proportional to 420,470.94, 630,768.82 and 136,066.16 is: 204,119.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,470.94 : 630,768.82 = 136,066.16 : x
  2. Step 2: Convert to fraction form
    420,470.94/630,768.82 = 136,066.16/x
  3. Step 3: Cross multiply
    420,470.94x = 630,768.82 × 136,066.16
  4. Step 4: Simplify right side
    420,470.94x = 85,826,291,185.13
  5. Step 5: Solve for x
    x = 85,826,291,185.13/420,470.94
  6. Step 6: Final answer
    x = 204,119.44

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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.