Home / 397,002.11-547,865.15-215,715.51

Finding the Fourth Proportional to 397,002.11, 547,865.15 and 215,715.51

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Solution

The fourth proportional to 397,002.11, 547,865.15 and 215,715.51 is: 297,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,002.11 : 547,865.15 = 215,715.51 : x
  2. Step 2: Convert to fraction form
    397,002.11/547,865.15 = 215,715.51/x
  3. Step 3: Cross multiply
    397,002.11x = 547,865.15 × 215,715.51
  4. Step 4: Simplify right side
    397,002.11x = 118,183,009,164.90
  5. Step 5: Solve for x
    x = 118,183,009,164.90/397,002.11
  6. Step 6: Final answer
    x = 297,688.62

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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.