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Finding the Fourth Proportional to 438,790.03, 658,210.56 and 123,271.54

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Solution

The fourth proportional to 438,790.03, 658,210.56 and 123,271.54 is: 184,914.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,790.03 : 658,210.56 = 123,271.54 : x
  2. Step 2: Convert to fraction form
    438,790.03/658,210.56 = 123,271.54/x
  3. Step 3: Cross multiply
    438,790.03x = 658,210.56 × 123,271.54
  4. Step 4: Simplify right side
    438,790.03x = 81,138,629,375.46
  5. Step 5: Solve for x
    x = 81,138,629,375.46/438,790.03
  6. Step 6: Final answer
    x = 184,914.48

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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.