Home / 345,679.20-518,311.44-135,066.24

Finding the Fourth Proportional to 345,679.20, 518,311.44 and 135,066.24

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Solution

The fourth proportional to 345,679.20, 518,311.44 and 135,066.24 is: 202,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,679.20 : 518,311.44 = 135,066.24 : x
  2. Step 2: Convert to fraction form
    345,679.20/518,311.44 = 135,066.24/x
  3. Step 3: Cross multiply
    345,679.20x = 518,311.44 × 135,066.24
  4. Step 4: Simplify right side
    345,679.20x = 70,006,377,349.79
  5. Step 5: Solve for x
    x = 70,006,377,349.79/345,679.20
  6. Step 6: Final answer
    x = 202,518.34

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1.5x scale

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.