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Finding the Fourth Proportional to 307,611.27, 424,502.17 and 171,637.28

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Solution

The fourth proportional to 307,611.27, 424,502.17 and 171,637.28 is: 236,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,611.27 : 424,502.17 = 171,637.28 : x
  2. Step 2: Convert to fraction form
    307,611.27/424,502.17 = 171,637.28/x
  3. Step 3: Cross multiply
    307,611.27x = 424,502.17 × 171,637.28
  4. Step 4: Simplify right side
    307,611.27x = 72,860,396,853.18
  5. Step 5: Solve for x
    x = 72,860,396,853.18/307,611.27
  6. Step 6: Final answer
    x = 236,858.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.