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Finding the Fourth Proportional to 354,624.54, 530,688.60 and 221,567.46

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Solution

The fourth proportional to 354,624.54, 530,688.60 and 221,567.46 is: 331,571.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,624.54 : 530,688.60 = 221,567.46 : x
  2. Step 2: Convert to fraction form
    354,624.54/530,688.60 = 221,567.46/x
  3. Step 3: Cross multiply
    354,624.54x = 530,688.60 × 221,567.46
  4. Step 4: Simplify right side
    354,624.54x = 117,583,325,152.96
  5. Step 5: Solve for x
    x = 117,583,325,152.96/354,624.54
  6. Step 6: Final answer
    x = 331,571.32

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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.