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Finding the Fourth Proportional to 352,667.80, 528,771.66 and 127,985.68

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Solution

The fourth proportional to 352,667.80, 528,771.66 and 127,985.68 is: 191,895.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,667.80 : 528,771.66 = 127,985.68 : x
  2. Step 2: Convert to fraction form
    352,667.80/528,771.66 = 127,985.68/x
  3. Step 3: Cross multiply
    352,667.80x = 528,771.66 × 127,985.68
  4. Step 4: Simplify right side
    352,667.80x = 67,675,200,469.83
  5. Step 5: Solve for x
    x = 67,675,200,469.83/352,667.80
  6. Step 6: Final answer
    x = 191,895.04

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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.