Home / 285,934.38-428,905.23-75,570.51

Finding the Fourth Proportional to 285,934.38, 428,905.23 and 75,570.51

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Solution

The fourth proportional to 285,934.38, 428,905.23 and 75,570.51 is: 113,356.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,934.38 : 428,905.23 = 75,570.51 : x
  2. Step 2: Convert to fraction form
    285,934.38/428,905.23 = 75,570.51/x
  3. Step 3: Cross multiply
    285,934.38x = 428,905.23 × 75,570.51
  4. Step 4: Simplify right side
    285,934.38x = 32,412,586,972.77
  5. Step 5: Solve for x
    x = 32,412,586,972.77/285,934.38
  6. Step 6: Final answer
    x = 113,356.73

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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.