Home / 379,076.40-523,115.36-209,306.88

Finding the Fourth Proportional to 379,076.40, 523,115.36 and 209,306.88

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Solution

The fourth proportional to 379,076.40, 523,115.36 and 209,306.88 is: 288,837.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,076.40 : 523,115.36 = 209,306.88 : x
  2. Step 2: Convert to fraction form
    379,076.40/523,115.36 = 209,306.88/x
  3. Step 3: Cross multiply
    379,076.40x = 523,115.36 × 209,306.88
  4. Step 4: Simplify right side
    379,076.40x = 109,491,643,881.68
  5. Step 5: Solve for x
    x = 109,491,643,881.68/379,076.40
  6. Step 6: Final answer
    x = 288,837.93

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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.