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Finding the Fourth Proportional to 245,628.70, 368,443.05 and 133,654.30

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Solution

The fourth proportional to 245,628.70, 368,443.05 and 133,654.30 is: 200,481.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,628.70 : 368,443.05 = 133,654.30 : x
  2. Step 2: Convert to fraction form
    245,628.70/368,443.05 = 133,654.30/x
  3. Step 3: Cross multiply
    245,628.70x = 368,443.05 × 133,654.30
  4. Step 4: Simplify right side
    245,628.70x = 49,243,997,937.62
  5. Step 5: Solve for x
    x = 49,243,997,937.62/245,628.70
  6. Step 6: Final answer
    x = 200,481.45

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1.5x scale

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.