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Finding the Fourth Proportional to 883,569, 1,325,353.50 and 218,721

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Solution

The fourth proportional to 883,569, 1,325,353.50 and 218,721 is: 328,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,569 : 1,325,353.50 = 218,721 : x
  2. Step 2: Convert to fraction form
    883,569/1,325,353.50 = 218,721/x
  3. Step 3: Cross multiply
    883,569x = 1,325,353.50 × 218,721
  4. Step 4: Simplify right side
    883,569x = 289,882,642,873.50
  5. Step 5: Solve for x
    x = 289,882,642,873.50/883,569
  6. Step 6: Final answer
    x = 328,081.50

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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.