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Finding the Fourth Proportional to 339,277.20, 508,915.80 and 171,315.60

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Solution

The fourth proportional to 339,277.20, 508,915.80 and 171,315.60 is: 256,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,277.20 : 508,915.80 = 171,315.60 : x
  2. Step 2: Convert to fraction form
    339,277.20/508,915.80 = 171,315.60/x
  3. Step 3: Cross multiply
    339,277.20x = 508,915.80 × 171,315.60
  4. Step 4: Simplify right side
    339,277.20x = 87,185,215,626.48
  5. Step 5: Solve for x
    x = 87,185,215,626.48/339,277.20
  6. Step 6: Final answer
    x = 256,973.40

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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.