Home / 345,877.70-477,238.64-209,983.20

Finding the Fourth Proportional to 345,877.70, 477,238.64 and 209,983.20

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Solution

The fourth proportional to 345,877.70, 477,238.64 and 209,983.20 is: 289,732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,877.70 : 477,238.64 = 209,983.20 : x
  2. Step 2: Convert to fraction form
    345,877.70/477,238.64 = 209,983.20/x
  3. Step 3: Cross multiply
    345,877.70x = 477,238.64 × 209,983.20
  4. Step 4: Simplify right side
    345,877.70x = 100,212,096,790.85
  5. Step 5: Solve for x
    x = 100,212,096,790.85/345,877.70
  6. Step 6: Final answer
    x = 289,732.75

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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.