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Finding the Fourth Proportional to 438,539.40, 657,754.41 and 123,020.91

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Solution

The fourth proportional to 438,539.40, 657,754.41 and 123,020.91 is: 184,516.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,539.40 : 657,754.41 = 123,020.91 : x
  2. Step 2: Convert to fraction form
    438,539.40/657,754.41 = 123,020.91/x
  3. Step 3: Cross multiply
    438,539.40x = 657,754.41 × 123,020.91
  4. Step 4: Simplify right side
    438,539.40x = 80,917,546,074.71
  5. Step 5: Solve for x
    x = 80,917,546,074.71/438,539.40
  6. Step 6: Final answer
    x = 184,516.02

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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.