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Finding the Fourth Proportional to 352,187.20, 527,503.20 and 289,979.20

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Solution

The fourth proportional to 352,187.20, 527,503.20 and 289,979.20 is: 434,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,187.20 : 527,503.20 = 289,979.20 : x
  2. Step 2: Convert to fraction form
    352,187.20/527,503.20 = 289,979.20/x
  3. Step 3: Cross multiply
    352,187.20x = 527,503.20 × 289,979.20
  4. Step 4: Simplify right side
    352,187.20x = 152,964,955,933.44
  5. Step 5: Solve for x
    x = 152,964,955,933.44/352,187.20
  6. Step 6: Final answer
    x = 434,328.55

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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.