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Finding the Fourth Proportional to 438,521.64, 657,727.78 and 123,003.15

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Solution

The fourth proportional to 438,521.64, 657,727.78 and 123,003.15 is: 184,489.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,521.64 : 657,727.78 = 123,003.15 : x
  2. Step 2: Convert to fraction form
    438,521.64/657,727.78 = 123,003.15/x
  3. Step 3: Cross multiply
    438,521.64x = 657,727.78 × 123,003.15
  4. Step 4: Simplify right side
    438,521.64x = 80,902,588,782.51
  5. Step 5: Solve for x
    x = 80,902,588,782.51/438,521.64
  6. Step 6: Final answer
    x = 184,489.39

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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.