Home / 420,944.19-631,022.63-154,633.20

Finding the Fourth Proportional to 420,944.19, 631,022.63 and 154,633.20

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Solution

The fourth proportional to 420,944.19, 631,022.63 and 154,633.20 is: 231,805.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,944.19 : 631,022.63 = 154,633.20 : x
  2. Step 2: Convert to fraction form
    420,944.19/631,022.63 = 154,633.20/x
  3. Step 3: Cross multiply
    420,944.19x = 631,022.63 × 154,633.20
  4. Step 4: Simplify right side
    420,944.19x = 97,577,049,394.22
  5. Step 5: Solve for x
    x = 97,577,049,394.22/420,944.19
  6. Step 6: Final answer
    x = 231,805.19

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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.