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Finding the Fourth Proportional to 258,661.57, 356,984.04 and 156,684.04

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Solution

The fourth proportional to 258,661.57, 356,984.04 and 156,684.04 is: 216,242.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,661.57 : 356,984.04 = 156,684.04 : x
  2. Step 2: Convert to fraction form
    258,661.57/356,984.04 = 156,684.04/x
  3. Step 3: Cross multiply
    258,661.57x = 356,984.04 × 156,684.04
  4. Step 4: Simplify right side
    258,661.57x = 55,933,699,817.80
  5. Step 5: Solve for x
    x = 55,933,699,817.80/258,661.57
  6. Step 6: Final answer
    x = 216,242.80

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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.