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Finding the Fourth Proportional to 239,572.84, 330,609.90 and 137,605

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Solution

The fourth proportional to 239,572.84, 330,609.90 and 137,605 is: 189,894.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,572.84 : 330,609.90 = 137,605 : x
  2. Step 2: Convert to fraction form
    239,572.84/330,609.90 = 137,605/x
  3. Step 3: Cross multiply
    239,572.84x = 330,609.90 × 137,605
  4. Step 4: Simplify right side
    239,572.84x = 45,493,575,289.50
  5. Step 5: Solve for x
    x = 45,493,575,289.50/239,572.84
  6. Step 6: Final answer
    x = 189,894.54

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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.