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Finding the Fourth Proportional to 354,635.55, 532,445.40 and 221,775.30

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Solution

The fourth proportional to 354,635.55, 532,445.40 and 221,775.30 is: 332,970.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,635.55 : 532,445.40 = 221,775.30 : x
  2. Step 2: Convert to fraction form
    354,635.55/532,445.40 = 221,775.30/x
  3. Step 3: Cross multiply
    354,635.55x = 532,445.40 × 221,775.30
  4. Step 4: Simplify right side
    354,635.55x = 118,083,238,318.62
  5. Step 5: Solve for x
    x = 118,083,238,318.62/354,635.55
  6. Step 6: Final answer
    x = 332,970.67

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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.