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Finding the Fourth Proportional to 647,484.54, 971,315.46 and 220,905.96

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Solution

The fourth proportional to 647,484.54, 971,315.46 and 220,905.96 is: 331,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,484.54 : 971,315.46 = 220,905.96 : x
  2. Step 2: Convert to fraction form
    647,484.54/971,315.46 = 220,905.96/x
  3. Step 3: Cross multiply
    647,484.54x = 971,315.46 × 220,905.96
  4. Step 4: Simplify right side
    647,484.54x = 214,569,374,154.14
  5. Step 5: Solve for x
    x = 214,569,374,154.14/647,484.54
  6. Step 6: Final answer
    x = 331,389.19

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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.