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Finding the Fourth Proportional to 329,915.52, 455,277.60 and 200,807.28

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Solution

The fourth proportional to 329,915.52, 455,277.60 and 200,807.28 is: 277,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,915.52 : 455,277.60 = 200,807.28 : x
  2. Step 2: Convert to fraction form
    329,915.52/455,277.60 = 200,807.28/x
  3. Step 3: Cross multiply
    329,915.52x = 455,277.60 × 200,807.28
  4. Step 4: Simplify right side
    329,915.52x = 91,423,056,500.93
  5. Step 5: Solve for x
    x = 91,423,056,500.93/329,915.52
  6. Step 6: Final answer
    x = 277,110.51

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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.