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Finding the Fourth Proportional to 405,291.27, 607,945.29 and 124,808.25

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Solution

The fourth proportional to 405,291.27, 607,945.29 and 124,808.25 is: 187,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,291.27 : 607,945.29 = 124,808.25 : x
  2. Step 2: Convert to fraction form
    405,291.27/607,945.29 = 124,808.25/x
  3. Step 3: Cross multiply
    405,291.27x = 607,945.29 × 124,808.25
  4. Step 4: Simplify right side
    405,291.27x = 75,876,587,740.64
  5. Step 5: Solve for x
    x = 75,876,587,740.64/405,291.27
  6. Step 6: Final answer
    x = 187,214.96

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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.