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Finding the Fourth Proportional to 258,173.39, 386,699.29 and 124,773.89

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Solution

The fourth proportional to 258,173.39, 386,699.29 and 124,773.89 is: 186,889.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,173.39 : 386,699.29 = 124,773.89 : x
  2. Step 2: Convert to fraction form
    258,173.39/386,699.29 = 124,773.89/x
  3. Step 3: Cross multiply
    258,173.39x = 386,699.29 × 124,773.89
  4. Step 4: Simplify right side
    258,173.39x = 48,249,972,428.11
  5. Step 5: Solve for x
    x = 48,249,972,428.11/258,173.39
  6. Step 6: Final answer
    x = 186,889.80

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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.