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Finding the Fourth Proportional to 351,995.40, 527,798.70 and 115,216.20

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Solution

The fourth proportional to 351,995.40, 527,798.70 and 115,216.20 is: 172,760.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,995.40 : 527,798.70 = 115,216.20 : x
  2. Step 2: Convert to fraction form
    351,995.40/527,798.70 = 115,216.20/x
  3. Step 3: Cross multiply
    351,995.40x = 527,798.70 × 115,216.20
  4. Step 4: Simplify right side
    351,995.40x = 60,810,960,578.94
  5. Step 5: Solve for x
    x = 60,810,960,578.94/351,995.40
  6. Step 6: Final answer
    x = 172,760.67

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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.