Home / 396,380.91-547,002.88-215,088.23

Finding the Fourth Proportional to 396,380.91, 547,002.88 and 215,088.23

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Solution

The fourth proportional to 396,380.91, 547,002.88 and 215,088.23 is: 296,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,380.91 : 547,002.88 = 215,088.23 : x
  2. Step 2: Convert to fraction form
    396,380.91/547,002.88 = 215,088.23/x
  3. Step 3: Cross multiply
    396,380.91x = 547,002.88 × 215,088.23
  4. Step 4: Simplify right side
    396,380.91x = 117,653,881,264.10
  5. Step 5: Solve for x
    x = 117,653,881,264.10/396,380.91
  6. Step 6: Final answer
    x = 296,820.25

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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.