Home / 378,966.90-522,983.84-215,614.41

Finding the Fourth Proportional to 378,966.90, 522,983.84 and 215,614.41

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Solution

The fourth proportional to 378,966.90, 522,983.84 and 215,614.41 is: 297,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,966.90 : 522,983.84 = 215,614.41 : x
  2. Step 2: Convert to fraction form
    378,966.90/522,983.84 = 215,614.41/x
  3. Step 3: Cross multiply
    378,966.90x = 522,983.84 × 215,614.41
  4. Step 4: Simplify right side
    378,966.90x = 112,762,850,274.70
  5. Step 5: Solve for x
    x = 112,762,850,274.70/378,966.90
  6. Step 6: Final answer
    x = 297,553.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.