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Finding the Fourth Proportional to 352,700.40, 529,180.20 and 142,359.60

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Solution

The fourth proportional to 352,700.40, 529,180.20 and 142,359.60 is: 213,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,700.40 : 529,180.20 = 142,359.60 : x
  2. Step 2: Convert to fraction form
    352,700.40/529,180.20 = 142,359.60/x
  3. Step 3: Cross multiply
    352,700.40x = 529,180.20 × 142,359.60
  4. Step 4: Simplify right side
    352,700.40x = 75,333,881,599.92
  5. Step 5: Solve for x
    x = 75,333,881,599.92/352,700.40
  6. Step 6: Final answer
    x = 213,591.71

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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.