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Finding the Fourth Proportional to 355,426.60, 532,362.30 and 214,940.20

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Solution

The fourth proportional to 355,426.60, 532,362.30 and 214,940.20 is: 321,940.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,426.60 : 532,362.30 = 214,940.20 : x
  2. Step 2: Convert to fraction form
    355,426.60/532,362.30 = 214,940.20/x
  3. Step 3: Cross multiply
    355,426.60x = 532,362.30 × 214,940.20
  4. Step 4: Simplify right side
    355,426.60x = 114,426,059,234.46
  5. Step 5: Solve for x
    x = 114,426,059,234.46/355,426.60
  6. Step 6: Final answer
    x = 321,940.06

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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.