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Finding the Fourth Proportional to 352,622.32, 529,143.66 and 128,000.32

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Solution

The fourth proportional to 352,622.32, 529,143.66 and 128,000.32 is: 192,076.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,622.32 : 529,143.66 = 128,000.32 : x
  2. Step 2: Convert to fraction form
    352,622.32/529,143.66 = 128,000.32/x
  3. Step 3: Cross multiply
    352,622.32x = 529,143.66 × 128,000.32
  4. Step 4: Simplify right side
    352,622.32x = 67,730,557,805.97
  5. Step 5: Solve for x
    x = 67,730,557,805.97/352,622.32
  6. Step 6: Final answer
    x = 192,076.77

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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.