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Finding the Fourth Proportional to 390,504.03, 585,846.15 and 165,871.72

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Solution

The fourth proportional to 390,504.03, 585,846.15 and 165,871.72 is: 248,845.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,504.03 : 585,846.15 = 165,871.72 : x
  2. Step 2: Convert to fraction form
    390,504.03/585,846.15 = 165,871.72/x
  3. Step 3: Cross multiply
    390,504.03x = 585,846.15 × 165,871.72
  4. Step 4: Simplify right side
    390,504.03x = 97,175,308,555.88
  5. Step 5: Solve for x
    x = 97,175,308,555.88/390,504.03
  6. Step 6: Final answer
    x = 248,845.85

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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.