Home / 390,310.20-585,575.46-109,829.88

Finding the Fourth Proportional to 390,310.20, 585,575.46 and 109,829.88

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Solution

The fourth proportional to 390,310.20, 585,575.46 and 109,829.88 is: 164,775.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,310.20 : 585,575.46 = 109,829.88 : x
  2. Step 2: Convert to fraction form
    390,310.20/585,575.46 = 109,829.88/x
  3. Step 3: Cross multiply
    390,310.20x = 585,575.46 × 109,829.88
  4. Step 4: Simplify right side
    390,310.20x = 64,313,682,502.74
  5. Step 5: Solve for x
    x = 64,313,682,502.74/390,310.20
  6. Step 6: Final answer
    x = 164,775.82

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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.