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Finding the Fourth Proportional to 621,112.16, 857,165.16 and 349,265.64

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Solution

The fourth proportional to 621,112.16, 857,165.16 and 349,265.64 is: 482,003.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,112.16 : 857,165.16 = 349,265.64 : x
  2. Step 2: Convert to fraction form
    621,112.16/857,165.16 = 349,265.64/x
  3. Step 3: Cross multiply
    621,112.16x = 857,165.16 × 349,265.64
  4. Step 4: Simplify right side
    621,112.16x = 299,378,338,193.10
  5. Step 5: Solve for x
    x = 299,378,338,193.10/621,112.16
  6. Step 6: Final answer
    x = 482,003.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.