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Finding the Fourth Proportional to 319,073.52, 440,315.78 and 173,880.60

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Solution

The fourth proportional to 319,073.52, 440,315.78 and 173,880.60 is: 239,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,073.52 : 440,315.78 = 173,880.60 : x
  2. Step 2: Convert to fraction form
    319,073.52/440,315.78 = 173,880.60/x
  3. Step 3: Cross multiply
    319,073.52x = 440,315.78 × 173,880.60
  4. Step 4: Simplify right side
    319,073.52x = 76,562,372,015.87
  5. Step 5: Solve for x
    x = 76,562,372,015.87/319,073.52
  6. Step 6: Final answer
    x = 239,952.13

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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.