Home / 305,498.30-458,138.09-105,765.05

Finding the Fourth Proportional to 305,498.30, 458,138.09 and 105,765.05

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Solution

The fourth proportional to 305,498.30, 458,138.09 and 105,765.05 is: 158,609.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,498.30 : 458,138.09 = 105,765.05 : x
  2. Step 2: Convert to fraction form
    305,498.30/458,138.09 = 105,765.05/x
  3. Step 3: Cross multiply
    305,498.30x = 458,138.09 × 105,765.05
  4. Step 4: Simplify right side
    305,498.30x = 48,454,999,405.51
  5. Step 5: Solve for x
    x = 48,454,999,405.51/305,498.30
  6. Step 6: Final answer
    x = 158,609.72

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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.