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Finding the Fourth Proportional to 393,401.76, 587,863.08 and 295,389.40

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Solution

The fourth proportional to 393,401.76, 587,863.08 and 295,389.40 is: 441,402.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,401.76 : 587,863.08 = 295,389.40 : x
  2. Step 2: Convert to fraction form
    393,401.76/587,863.08 = 295,389.40/x
  3. Step 3: Cross multiply
    393,401.76x = 587,863.08 × 295,389.40
  4. Step 4: Simplify right side
    393,401.76x = 173,648,522,483.35
  5. Step 5: Solve for x
    x = 173,648,522,483.35/393,401.76
  6. Step 6: Final answer
    x = 441,402.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.