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Finding the Fourth Proportional to 319,400.40, 479,100.60 and 161,936.40

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Solution

The fourth proportional to 319,400.40, 479,100.60 and 161,936.40 is: 242,904.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,400.40 : 479,100.60 = 161,936.40 : x
  2. Step 2: Convert to fraction form
    319,400.40/479,100.60 = 161,936.40/x
  3. Step 3: Cross multiply
    319,400.40x = 479,100.60 × 161,936.40
  4. Step 4: Simplify right side
    319,400.40x = 77,583,826,401.84
  5. Step 5: Solve for x
    x = 77,583,826,401.84/319,400.40
  6. Step 6: Final answer
    x = 242,904.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.