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Finding the Fourth Proportional to 355,273.60, 532,910.40 and 285,289.60

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Solution

The fourth proportional to 355,273.60, 532,910.40 and 285,289.60 is: 427,934.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,273.60 : 532,910.40 = 285,289.60 : x
  2. Step 2: Convert to fraction form
    355,273.60/532,910.40 = 285,289.60/x
  3. Step 3: Cross multiply
    355,273.60x = 532,910.40 × 285,289.60
  4. Step 4: Simplify right side
    355,273.60x = 152,033,794,851.84
  5. Step 5: Solve for x
    x = 152,033,794,851.84/355,273.60
  6. Step 6: Final answer
    x = 427,934.40

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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.