Home / 396,421.04-547,061.40-215,133

Finding the Fourth Proportional to 396,421.04, 547,061.40 and 215,133

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Solution

The fourth proportional to 396,421.04, 547,061.40 and 215,133 is: 296,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,421.04 : 547,061.40 = 215,133 : x
  2. Step 2: Convert to fraction form
    396,421.04/547,061.40 = 215,133/x
  3. Step 3: Cross multiply
    396,421.04x = 547,061.40 × 215,133
  4. Step 4: Simplify right side
    396,421.04x = 117,690,959,090.54
  5. Step 5: Solve for x
    x = 117,690,959,090.54/396,421.04
  6. Step 6: Final answer
    x = 296,883.74

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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.