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Finding the Fourth Proportional to 458,186.64, 687,003.84 and 205,421.37

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Solution

The fourth proportional to 458,186.64, 687,003.84 and 205,421.37 is: 308,008.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,186.64 : 687,003.84 = 205,421.37 : x
  2. Step 2: Convert to fraction form
    458,186.64/687,003.84 = 205,421.37/x
  3. Step 3: Cross multiply
    458,186.64x = 687,003.84 × 205,421.37
  4. Step 4: Simplify right side
    458,186.64x = 141,125,270,008.06
  5. Step 5: Solve for x
    x = 141,125,270,008.06/458,186.64
  6. Step 6: Final answer
    x = 308,008.26

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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.