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Finding the Fourth Proportional to 347,628.75, 521,676.84 and 122,988.30

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Solution

The fourth proportional to 347,628.75, 521,676.84 and 122,988.30 is: 184,565.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,628.75 : 521,676.84 = 122,988.30 : x
  2. Step 2: Convert to fraction form
    347,628.75/521,676.84 = 122,988.30/x
  3. Step 3: Cross multiply
    347,628.75x = 521,676.84 × 122,988.30
  4. Step 4: Simplify right side
    347,628.75x = 64,160,147,700.97
  5. Step 5: Solve for x
    x = 64,160,147,700.97/347,628.75
  6. Step 6: Final answer
    x = 184,565.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.