Home / 285,828.36-428,747.40-108,418.92

Finding the Fourth Proportional to 285,828.36, 428,747.40 and 108,418.92

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Solution

The fourth proportional to 285,828.36, 428,747.40 and 108,418.92 is: 162,630.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,828.36 : 428,747.40 = 108,418.92 : x
  2. Step 2: Convert to fraction form
    285,828.36/428,747.40 = 108,418.92/x
  3. Step 3: Cross multiply
    285,828.36x = 428,747.40 × 108,418.92
  4. Step 4: Simplify right side
    285,828.36x = 46,484,330,060.81
  5. Step 5: Solve for x
    x = 46,484,330,060.81/285,828.36
  6. Step 6: Final answer
    x = 162,630.22

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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.