Home / 285,564.12-394,073.76-156,501.60

Finding the Fourth Proportional to 285,564.12, 394,073.76 and 156,501.60

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Solution

The fourth proportional to 285,564.12, 394,073.76 and 156,501.60 is: 215,969.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,564.12 : 394,073.76 = 156,501.60 : x
  2. Step 2: Convert to fraction form
    285,564.12/394,073.76 = 156,501.60/x
  3. Step 3: Cross multiply
    285,564.12x = 394,073.76 × 156,501.60
  4. Step 4: Simplify right side
    285,564.12x = 61,673,173,958.02
  5. Step 5: Solve for x
    x = 61,673,173,958.02/285,564.12
  6. Step 6: Final answer
    x = 215,969.62

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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.