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Finding the Fourth Proportional to 552,698.20, 829,484.70 and 215,900.20

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Solution

The fourth proportional to 552,698.20, 829,484.70 and 215,900.20 is: 324,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,698.20 : 829,484.70 = 215,900.20 : x
  2. Step 2: Convert to fraction form
    552,698.20/829,484.70 = 215,900.20/x
  3. Step 3: Cross multiply
    552,698.20x = 829,484.70 × 215,900.20
  4. Step 4: Simplify right side
    552,698.20x = 179,085,912,626.94
  5. Step 5: Solve for x
    x = 179,085,912,626.94/552,698.20
  6. Step 6: Final answer
    x = 324,021.16

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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.