Home / 379,215.18-523,316.66-209,449.35

Finding the Fourth Proportional to 379,215.18, 523,316.66 and 209,449.35

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Solution

The fourth proportional to 379,215.18, 523,316.66 and 209,449.35 is: 289,039.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,215.18 : 523,316.66 = 209,449.35 : x
  2. Step 2: Convert to fraction form
    379,215.18/523,316.66 = 209,449.35/x
  3. Step 3: Cross multiply
    379,215.18x = 523,316.66 × 209,449.35
  4. Step 4: Simplify right side
    379,215.18x = 109,608,333,233.92
  5. Step 5: Solve for x
    x = 109,608,333,233.92/379,215.18
  6. Step 6: Final answer
    x = 289,039.94

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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.