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Finding the Fourth Proportional to 390,599.21, 585,921.67 and 150,714.41

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Solution

The fourth proportional to 390,599.21, 585,921.67 and 150,714.41 is: 226,080.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,599.21 : 585,921.67 = 150,714.41 : x
  2. Step 2: Convert to fraction form
    390,599.21/585,921.67 = 150,714.41/x
  3. Step 3: Cross multiply
    390,599.21x = 585,921.67 × 150,714.41
  4. Step 4: Simplify right side
    390,599.21x = 88,306,835,493.87
  5. Step 5: Solve for x
    x = 88,306,835,493.87/390,599.21
  6. Step 6: Final answer
    x = 226,080.42

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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.