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Finding the Fourth Proportional to 239,914, 331,110.48 and 139,312

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Solution

The fourth proportional to 239,914, 331,110.48 and 139,312 is: 192,267.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,914 : 331,110.48 = 139,312 : x
  2. Step 2: Convert to fraction form
    239,914/331,110.48 = 139,312/x
  3. Step 3: Cross multiply
    239,914x = 331,110.48 × 139,312
  4. Step 4: Simplify right side
    239,914x = 46,127,663,189.76
  5. Step 5: Solve for x
    x = 46,127,663,189.76/239,914
  6. Step 6: Final answer
    x = 192,267.49

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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.