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Finding the Fourth Proportional to 285,359.51, 428,158.74 and 125,352.92

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Solution

The fourth proportional to 285,359.51, 428,158.74 and 125,352.92 is: 188,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,359.51 : 428,158.74 = 125,352.92 : x
  2. Step 2: Convert to fraction form
    285,359.51/428,158.74 = 125,352.92/x
  3. Step 3: Cross multiply
    285,359.51x = 428,158.74 × 125,352.92
  4. Step 4: Simplify right side
    285,359.51x = 53,670,948,282.52
  5. Step 5: Solve for x
    x = 53,670,948,282.52/285,359.51
  6. Step 6: Final answer
    x = 188,081.86

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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.