Home / 379,724.28-523,984.32-209,954.76

Finding the Fourth Proportional to 379,724.28, 523,984.32 and 209,954.76

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Solution

The fourth proportional to 379,724.28, 523,984.32 and 209,954.76 is: 289,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,724.28 : 523,984.32 = 209,954.76 : x
  2. Step 2: Convert to fraction form
    379,724.28/523,984.32 = 209,954.76/x
  3. Step 3: Cross multiply
    379,724.28x = 523,984.32 × 209,954.76
  4. Step 4: Simplify right side
    379,724.28x = 110,013,002,149.36
  5. Step 5: Solve for x
    x = 110,013,002,149.36/379,724.28
  6. Step 6: Final answer
    x = 289,718.11

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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.