Home / 379,070.64-523,121.40-209,304.36

Finding the Fourth Proportional to 379,070.64, 523,121.40 and 209,304.36

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Solution

The fourth proportional to 379,070.64, 523,121.40 and 209,304.36 is: 288,842.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,070.64 : 523,121.40 = 209,304.36 : x
  2. Step 2: Convert to fraction form
    379,070.64/523,121.40 = 209,304.36/x
  3. Step 3: Cross multiply
    379,070.64x = 523,121.40 × 209,304.36
  4. Step 4: Simplify right side
    379,070.64x = 109,491,589,829.30
  5. Step 5: Solve for x
    x = 109,491,589,829.30/379,070.64
  6. Step 6: Final answer
    x = 288,842.18

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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.