Home / 345,645.60-518,796.45-212,785.35

Finding the Fourth Proportional to 345,645.60, 518,796.45 and 212,785.35

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Solution

The fourth proportional to 345,645.60, 518,796.45 and 212,785.35 is: 319,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,645.60 : 518,796.45 = 212,785.35 : x
  2. Step 2: Convert to fraction form
    345,645.60/518,796.45 = 212,785.35/x
  3. Step 3: Cross multiply
    345,645.60x = 518,796.45 × 212,785.35
  4. Step 4: Simplify right side
    345,645.60x = 110,392,284,192.01
  5. Step 5: Solve for x
    x = 110,392,284,192.01/345,645.60
  6. Step 6: Final answer
    x = 319,379.98

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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.