Home / 393,138.18-589,935.78-165,417.12

Finding the Fourth Proportional to 393,138.18, 589,935.78 and 165,417.12

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Solution

The fourth proportional to 393,138.18, 589,935.78 and 165,417.12 is: 248,221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,138.18 : 589,935.78 = 165,417.12 : x
  2. Step 2: Convert to fraction form
    393,138.18/589,935.78 = 165,417.12/x
  3. Step 3: Cross multiply
    393,138.18x = 589,935.78 × 165,417.12
  4. Step 4: Simplify right side
    393,138.18x = 97,585,477,712.55
  5. Step 5: Solve for x
    x = 97,585,477,712.55/393,138.18
  6. Step 6: Final answer
    x = 248,221.83

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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.