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Finding the Fourth Proportional to 431,491.05, 647,236.58 and 151,036.65

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Solution

The fourth proportional to 431,491.05, 647,236.58 and 151,036.65 is: 226,554.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,491.05 : 647,236.58 = 151,036.65 : x
  2. Step 2: Convert to fraction form
    431,491.05/647,236.58 = 151,036.65/x
  3. Step 3: Cross multiply
    431,491.05x = 647,236.58 × 151,036.65
  4. Step 4: Simplify right side
    431,491.05x = 97,756,444,045.47
  5. Step 5: Solve for x
    x = 97,756,444,045.47/431,491.05
  6. Step 6: Final answer
    x = 226,554.98

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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.