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Finding the Fourth Proportional to 260,579.70, 390,213.45 and 171,350.10

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Solution

The fourth proportional to 260,579.70, 390,213.45 and 171,350.10 is: 256,593.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,579.70 : 390,213.45 = 171,350.10 : x
  2. Step 2: Convert to fraction form
    260,579.70/390,213.45 = 171,350.10/x
  3. Step 3: Cross multiply
    260,579.70x = 390,213.45 × 171,350.10
  4. Step 4: Simplify right side
    260,579.70x = 66,863,113,678.85
  5. Step 5: Solve for x
    x = 66,863,113,678.85/260,579.70
  6. Step 6: Final answer
    x = 256,593.72

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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.