Home / 431,219.30-646,927.36-131,742.45

Finding the Fourth Proportional to 431,219.30, 646,927.36 and 131,742.45

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Solution

The fourth proportional to 431,219.30, 646,927.36 and 131,742.45 is: 197,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,219.30 : 646,927.36 = 131,742.45 : x
  2. Step 2: Convert to fraction form
    431,219.30/646,927.36 = 131,742.45/x
  3. Step 3: Cross multiply
    431,219.30x = 646,927.36 × 131,742.45
  4. Step 4: Simplify right side
    431,219.30x = 85,227,795,049.08
  5. Step 5: Solve for x
    x = 85,227,795,049.08/431,219.30
  6. Step 6: Final answer
    x = 197,643.74

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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.