Home / 345,109.66-517,789.06-120,503.20

Finding the Fourth Proportional to 345,109.66, 517,789.06 and 120,503.20

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Solution

The fourth proportional to 345,109.66, 517,789.06 and 120,503.20 is: 180,798.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,109.66 : 517,789.06 = 120,503.20 : x
  2. Step 2: Convert to fraction form
    345,109.66/517,789.06 = 120,503.20/x
  3. Step 3: Cross multiply
    345,109.66x = 517,789.06 × 120,503.20
  4. Step 4: Simplify right side
    345,109.66x = 62,395,238,654.99
  5. Step 5: Solve for x
    x = 62,395,238,654.99/345,109.66
  6. Step 6: Final answer
    x = 180,798.30

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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.