Home / 345,489.12-518,208.72-108,899.52

Finding the Fourth Proportional to 345,489.12, 518,208.72 and 108,899.52

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Solution

The fourth proportional to 345,489.12, 518,208.72 and 108,899.52 is: 163,341.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,489.12 : 518,208.72 = 108,899.52 : x
  2. Step 2: Convert to fraction form
    345,489.12/518,208.72 = 108,899.52/x
  3. Step 3: Cross multiply
    345,489.12x = 518,208.72 × 108,899.52
  4. Step 4: Simplify right side
    345,489.12x = 56,432,680,867.81
  5. Step 5: Solve for x
    x = 56,432,680,867.81/345,489.12
  6. Step 6: Final answer
    x = 163,341.41

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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.