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Finding the Fourth Proportional to 245,424.80, 368,140.60 and 161,720.80

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Solution

The fourth proportional to 245,424.80, 368,140.60 and 161,720.80 is: 242,583.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,424.80 : 368,140.60 = 161,720.80 : x
  2. Step 2: Convert to fraction form
    245,424.80/368,140.60 = 161,720.80/x
  3. Step 3: Cross multiply
    245,424.80x = 368,140.60 × 161,720.80
  4. Step 4: Simplify right side
    245,424.80x = 59,535,992,344.48
  5. Step 5: Solve for x
    x = 59,535,992,344.48/245,424.80
  6. Step 6: Final answer
    x = 242,583.44

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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.