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Finding the Fourth Proportional to 219,410.80, 329,807.40 and 215,263.60

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Solution

The fourth proportional to 219,410.80, 329,807.40 and 215,263.60 is: 323,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,410.80 : 329,807.40 = 215,263.60 : x
  2. Step 2: Convert to fraction form
    219,410.80/329,807.40 = 215,263.60/x
  3. Step 3: Cross multiply
    219,410.80x = 329,807.40 × 215,263.60
  4. Step 4: Simplify right side
    219,410.80x = 70,995,528,230.64
  5. Step 5: Solve for x
    x = 70,995,528,230.64/219,410.80
  6. Step 6: Final answer
    x = 323,573.54

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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.