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Finding the Fourth Proportional to 397,065.42, 547,948.48 and 215,773.92

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Solution

The fourth proportional to 397,065.42, 547,948.48 and 215,773.92 is: 297,767.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,065.42 : 547,948.48 = 215,773.92 : x
  2. Step 2: Convert to fraction form
    397,065.42/547,948.48 = 215,773.92/x
  3. Step 3: Cross multiply
    397,065.42x = 547,948.48 × 215,773.92
  4. Step 4: Simplify right side
    397,065.42x = 118,232,991,487.64
  5. Step 5: Solve for x
    x = 118,232,991,487.64/397,065.42
  6. Step 6: Final answer
    x = 297,767.03

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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.