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Finding the Fourth Proportional to 647,490.08, 971,323.82 and 220,911.48

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Solution

The fourth proportional to 647,490.08, 971,323.82 and 220,911.48 is: 331,397.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,490.08 : 971,323.82 = 220,911.48 : x
  2. Step 2: Convert to fraction form
    647,490.08/971,323.82 = 220,911.48/x
  3. Step 3: Cross multiply
    647,490.08x = 971,323.82 × 220,911.48
  4. Step 4: Simplify right side
    647,490.08x = 214,576,582,635.45
  5. Step 5: Solve for x
    x = 214,576,582,635.45/647,490.08
  6. Step 6: Final answer
    x = 331,397.48

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1.5x scale

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.