Home / 379,643.11-523,918.43-209,888.17

Finding the Fourth Proportional to 379,643.11, 523,918.43 and 209,888.17

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Solution

The fourth proportional to 379,643.11, 523,918.43 and 209,888.17 is: 289,651.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,643.11 : 523,918.43 = 209,888.17 : x
  2. Step 2: Convert to fraction form
    379,643.11/523,918.43 = 209,888.17/x
  3. Step 3: Cross multiply
    379,643.11x = 523,918.43 × 209,888.17
  4. Step 4: Simplify right side
    379,643.11x = 109,964,278,142.74
  5. Step 5: Solve for x
    x = 109,964,278,142.74/379,643.11
  6. Step 6: Final answer
    x = 289,651.72

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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.