Home / 379,448.16-523,638.64-209,682.28

Finding the Fourth Proportional to 379,448.16, 523,638.64 and 209,682.28

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Solution

The fourth proportional to 379,448.16, 523,638.64 and 209,682.28 is: 289,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,448.16 : 523,638.64 = 209,682.28 : x
  2. Step 2: Convert to fraction form
    379,448.16/523,638.64 = 209,682.28/x
  3. Step 3: Cross multiply
    379,448.16x = 523,638.64 × 209,682.28
  4. Step 4: Simplify right side
    379,448.16x = 109,797,743,931.30
  5. Step 5: Solve for x
    x = 109,797,743,931.30/379,448.16
  6. Step 6: Final answer
    x = 289,361.65

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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.