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Finding the Fourth Proportional to 375,285.05, 517,872.86 and 220,215.47

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Solution

The fourth proportional to 375,285.05, 517,872.86 and 220,215.47 is: 303,885.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,285.05 : 517,872.86 = 220,215.47 : x
  2. Step 2: Convert to fraction form
    375,285.05/517,872.86 = 220,215.47/x
  3. Step 3: Cross multiply
    375,285.05x = 517,872.86 × 220,215.47
  4. Step 4: Simplify right side
    375,285.05x = 114,043,612,532.38
  5. Step 5: Solve for x
    x = 114,043,612,532.38/375,285.05
  6. Step 6: Final answer
    x = 303,885.31

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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.