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Finding the Fourth Proportional to 239,952, 331,133.76 and 139,356.48

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Solution

The fourth proportional to 239,952, 331,133.76 and 139,356.48 is: 192,311.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,952 : 331,133.76 = 139,356.48 : x
  2. Step 2: Convert to fraction form
    239,952/331,133.76 = 139,356.48/x
  3. Step 3: Cross multiply
    239,952x = 331,133.76 × 139,356.48
  4. Step 4: Simplify right side
    239,952x = 46,145,635,202.76
  5. Step 5: Solve for x
    x = 46,145,635,202.76/239,952
  6. Step 6: Final answer
    x = 192,311.94

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1.5x scale

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.