Home / 379,387.27-523,565-209,632.33

Finding the Fourth Proportional to 379,387.27, 523,565 and 209,632.33

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Solution

The fourth proportional to 379,387.27, 523,565 and 209,632.33 is: 289,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,387.27 : 523,565 = 209,632.33 : x
  2. Step 2: Convert to fraction form
    379,387.27/523,565 = 209,632.33/x
  3. Step 3: Cross multiply
    379,387.27x = 523,565 × 209,632.33
  4. Step 4: Simplify right side
    379,387.27x = 109,756,150,856.45
  5. Step 5: Solve for x
    x = 109,756,150,856.45/379,387.27
  6. Step 6: Final answer
    x = 289,298.45

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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.