Home / 379,654.72-523,934.52-209,899.84

Finding the Fourth Proportional to 379,654.72, 523,934.52 and 209,899.84

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Solution

The fourth proportional to 379,654.72, 523,934.52 and 209,899.84 is: 289,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,654.72 : 523,934.52 = 209,899.84 : x
  2. Step 2: Convert to fraction form
    379,654.72/523,934.52 = 209,899.84/x
  3. Step 3: Cross multiply
    379,654.72x = 523,934.52 × 209,899.84
  4. Step 4: Simplify right side
    379,654.72x = 109,973,771,918.48
  5. Step 5: Solve for x
    x = 109,973,771,918.48/379,654.72
  6. Step 6: Final answer
    x = 289,667.86

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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.