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Finding the Fourth Proportional to 438,456.77, 657,433.94 and 134,771.84

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Solution

The fourth proportional to 438,456.77, 657,433.94 and 134,771.84 is: 202,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,456.77 : 657,433.94 = 134,771.84 : x
  2. Step 2: Convert to fraction form
    438,456.77/657,433.94 = 134,771.84/x
  3. Step 3: Cross multiply
    438,456.77x = 657,433.94 × 134,771.84
  4. Step 4: Simplify right side
    438,456.77x = 88,603,578,485.08
  5. Step 5: Solve for x
    x = 88,603,578,485.08/438,456.77
  6. Step 6: Final answer
    x = 202,080.54

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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.