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Finding the Fourth Proportional to 442,608.77, 663,897.39 and 143,081.49

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Solution

The fourth proportional to 442,608.77, 663,897.39 and 143,081.49 is: 214,617.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,608.77 : 663,897.39 = 143,081.49 : x
  2. Step 2: Convert to fraction form
    442,608.77/663,897.39 = 143,081.49/x
  3. Step 3: Cross multiply
    442,608.77x = 663,897.39 × 143,081.49
  4. Step 4: Simplify right side
    442,608.77x = 94,991,427,768.31
  5. Step 5: Solve for x
    x = 94,991,427,768.31/442,608.77
  6. Step 6: Final answer
    x = 214,617.14

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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.