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Finding the Fourth Proportional to 376,378.65, 519,389.09 and 213,031.65

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Solution

The fourth proportional to 376,378.65, 519,389.09 and 213,031.65 is: 293,976.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,378.65 : 519,389.09 = 213,031.65 : x
  2. Step 2: Convert to fraction form
    376,378.65/519,389.09 = 213,031.65/x
  3. Step 3: Cross multiply
    376,378.65x = 519,389.09 × 213,031.65
  4. Step 4: Simplify right side
    376,378.65x = 110,646,313,769.54
  5. Step 5: Solve for x
    x = 110,646,313,769.54/376,378.65
  6. Step 6: Final answer
    x = 293,976.06

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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.