Home / 420,441.04-630,286.48-154,139.38

Finding the Fourth Proportional to 420,441.04, 630,286.48 and 154,139.38

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Solution

The fourth proportional to 420,441.04, 630,286.48 and 154,139.38 is: 231,071.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,441.04 : 630,286.48 = 154,139.38 : x
  2. Step 2: Convert to fraction form
    420,441.04/630,286.48 = 154,139.38/x
  3. Step 3: Cross multiply
    420,441.04x = 630,286.48 × 154,139.38
  4. Step 4: Simplify right side
    420,441.04x = 97,151,967,249.58
  5. Step 5: Solve for x
    x = 97,151,967,249.58/420,441.04
  6. Step 6: Final answer
    x = 231,071.56

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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.