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Finding the Fourth Proportional to 397,066.89, 547,950.51 and 215,775.39

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Solution

The fourth proportional to 397,066.89, 547,950.51 and 215,775.39 is: 297,769.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,066.89 : 547,950.51 = 215,775.39 : x
  2. Step 2: Convert to fraction form
    397,066.89/547,950.51 = 215,775.39/x
  3. Step 3: Cross multiply
    397,066.89x = 547,950.51 × 215,775.39
  4. Step 4: Simplify right side
    397,066.89x = 118,234,234,995.95
  5. Step 5: Solve for x
    x = 118,234,234,995.95/397,066.89
  6. Step 6: Final answer
    x = 297,769.06

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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.