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Finding the Fourth Proportional to 307,708.50, 424,638.27 and 173,572.50

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Solution

The fourth proportional to 307,708.50, 424,638.27 and 173,572.50 is: 239,530.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,708.50 : 424,638.27 = 173,572.50 : x
  2. Step 2: Convert to fraction form
    307,708.50/424,638.27 = 173,572.50/x
  3. Step 3: Cross multiply
    307,708.50x = 424,638.27 × 173,572.50
  4. Step 4: Simplify right side
    307,708.50x = 73,705,526,119.58
  5. Step 5: Solve for x
    x = 73,705,526,119.58/307,708.50
  6. Step 6: Final answer
    x = 239,530.35

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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.