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Finding the Fourth Proportional to 285,851.33, 428,687.04 and 103,458.59

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Solution

The fourth proportional to 285,851.33, 428,687.04 and 103,458.59 is: 155,155.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,851.33 : 428,687.04 = 103,458.59 : x
  2. Step 2: Convert to fraction form
    285,851.33/428,687.04 = 103,458.59/x
  3. Step 3: Cross multiply
    285,851.33x = 428,687.04 × 103,458.59
  4. Step 4: Simplify right side
    285,851.33x = 44,351,356,709.67
  5. Step 5: Solve for x
    x = 44,351,356,709.67/285,851.33
  6. Step 6: Final answer
    x = 155,155.33

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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.