Home / 420,231.66-630,233.01-139,712.46

Finding the Fourth Proportional to 420,231.66, 630,233.01 and 139,712.46

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Solution

The fourth proportional to 420,231.66, 630,233.01 and 139,712.46 is: 209,530.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,231.66 : 630,233.01 = 139,712.46 : x
  2. Step 2: Convert to fraction form
    420,231.66/630,233.01 = 139,712.46/x
  3. Step 3: Cross multiply
    420,231.66x = 630,233.01 × 139,712.46
  4. Step 4: Simplify right side
    420,231.66x = 88,051,404,200.30
  5. Step 5: Solve for x
    x = 88,051,404,200.30/420,231.66
  6. Step 6: Final answer
    x = 209,530.63

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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.