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Finding the Fourth Proportional to 285,362.53, 428,072.11 and 105,495.08

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Solution

The fourth proportional to 285,362.53, 428,072.11 and 105,495.08 is: 158,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,362.53 : 428,072.11 = 105,495.08 : x
  2. Step 2: Convert to fraction form
    285,362.53/428,072.11 = 105,495.08/x
  3. Step 3: Cross multiply
    285,362.53x = 428,072.11 × 105,495.08
  4. Step 4: Simplify right side
    285,362.53x = 45,159,499,086.12
  5. Step 5: Solve for x
    x = 45,159,499,086.12/285,362.53
  6. Step 6: Final answer
    x = 158,253.08

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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.