Home / 379,718.28-523,976.04-209,948.76

Finding the Fourth Proportional to 379,718.28, 523,976.04 and 209,948.76

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Solution

The fourth proportional to 379,718.28, 523,976.04 and 209,948.76 is: 289,709.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,718.28 : 523,976.04 = 209,948.76 : x
  2. Step 2: Convert to fraction form
    379,718.28/523,976.04 = 209,948.76/x
  3. Step 3: Cross multiply
    379,718.28x = 523,976.04 × 209,948.76
  4. Step 4: Simplify right side
    379,718.28x = 110,008,119,867.71
  5. Step 5: Solve for x
    x = 110,008,119,867.71/379,718.28
  6. Step 6: Final answer
    x = 289,709.83

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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.