Home / 279,890.30-386,234.05-159,014.81

Finding the Fourth Proportional to 279,890.30, 386,234.05 and 159,014.81

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Solution

The fourth proportional to 279,890.30, 386,234.05 and 159,014.81 is: 219,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,890.30 : 386,234.05 = 159,014.81 : x
  2. Step 2: Convert to fraction form
    279,890.30/386,234.05 = 159,014.81/x
  3. Step 3: Cross multiply
    279,890.30x = 386,234.05 × 159,014.81
  4. Step 4: Simplify right side
    279,890.30x = 61,416,934,495.25
  5. Step 5: Solve for x
    x = 61,416,934,495.25/279,890.30
  6. Step 6: Final answer
    x = 219,432.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.