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Finding the Fourth Proportional to 398,401.70, 597,708.15 and 173,665.70

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Solution

The fourth proportional to 398,401.70, 597,708.15 and 173,665.70 is: 260,544.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,401.70 : 597,708.15 = 173,665.70 : x
  2. Step 2: Convert to fraction form
    398,401.70/597,708.15 = 173,665.70/x
  3. Step 3: Cross multiply
    398,401.70x = 597,708.15 × 173,665.70
  4. Step 4: Simplify right side
    398,401.70x = 103,801,404,265.46
  5. Step 5: Solve for x
    x = 103,801,404,265.46/398,401.70
  6. Step 6: Final answer
    x = 260,544.58

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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.