Home / 396,467.18-547,129.95-215,181.28

Finding the Fourth Proportional to 396,467.18, 547,129.95 and 215,181.28

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Solution

The fourth proportional to 396,467.18, 547,129.95 and 215,181.28 is: 296,953.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,467.18 : 547,129.95 = 215,181.28 : x
  2. Step 2: Convert to fraction form
    396,467.18/547,129.95 = 215,181.28/x
  3. Step 3: Cross multiply
    396,467.18x = 547,129.95 × 215,181.28
  4. Step 4: Simplify right side
    396,467.18x = 117,732,122,967.34
  5. Step 5: Solve for x
    x = 117,732,122,967.34/396,467.18
  6. Step 6: Final answer
    x = 296,953.01

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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.