Home / 285,905.13-428,693.61-108,298.86

Finding the Fourth Proportional to 285,905.13, 428,693.61 and 108,298.86

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Solution

The fourth proportional to 285,905.13, 428,693.61 and 108,298.86 is: 162,386.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,905.13 : 428,693.61 = 108,298.86 : x
  2. Step 2: Convert to fraction form
    285,905.13/428,693.61 = 108,298.86/x
  3. Step 3: Cross multiply
    285,905.13x = 428,693.61 × 108,298.86
  4. Step 4: Simplify right side
    285,905.13x = 46,427,029,252.28
  5. Step 5: Solve for x
    x = 46,427,029,252.28/285,905.13
  6. Step 6: Final answer
    x = 162,386.14

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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.