Home / 285,663.12-428,395.92-117,135.60

Finding the Fourth Proportional to 285,663.12, 428,395.92 and 117,135.60

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Solution

The fourth proportional to 285,663.12, 428,395.92 and 117,135.60 is: 175,662.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,663.12 : 428,395.92 = 117,135.60 : x
  2. Step 2: Convert to fraction form
    285,663.12/428,395.92 = 117,135.60/x
  3. Step 3: Cross multiply
    285,663.12x = 428,395.92 × 117,135.60
  4. Step 4: Simplify right side
    285,663.12x = 50,180,413,126.75
  5. Step 5: Solve for x
    x = 50,180,413,126.75/285,663.12
  6. Step 6: Final answer
    x = 175,662.90

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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.