Home / 379,688.84-523,951.35-209,890.16

Finding the Fourth Proportional to 379,688.84, 523,951.35 and 209,890.16

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Solution

The fourth proportional to 379,688.84, 523,951.35 and 209,890.16 is: 289,637.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,688.84 : 523,951.35 = 209,890.16 : x
  2. Step 2: Convert to fraction form
    379,688.84/523,951.35 = 209,890.16/x
  3. Step 3: Cross multiply
    379,688.84x = 523,951.35 × 209,890.16
  4. Step 4: Simplify right side
    379,688.84x = 109,972,231,241.69
  5. Step 5: Solve for x
    x = 109,972,231,241.69/379,688.84
  6. Step 6: Final answer
    x = 289,637.78

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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.