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Finding the Fourth Proportional to 228,911.20, 343,366.80 and 216,008.80

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Solution

The fourth proportional to 228,911.20, 343,366.80 and 216,008.80 is: 324,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,911.20 : 343,366.80 = 216,008.80 : x
  2. Step 2: Convert to fraction form
    228,911.20/343,366.80 = 216,008.80/x
  3. Step 3: Cross multiply
    228,911.20x = 343,366.80 × 216,008.80
  4. Step 4: Simplify right side
    228,911.20x = 74,170,250,427.84
  5. Step 5: Solve for x
    x = 74,170,250,427.84/228,911.20
  6. Step 6: Final answer
    x = 324,013.20

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1.5x scale

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.