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Finding the Fourth Proportional to 218,783.25, 328,230.27 and 61,011.70

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Solution

The fourth proportional to 218,783.25, 328,230.27 and 61,011.70 is: 91,532.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,783.25 : 328,230.27 = 61,011.70 : x
  2. Step 2: Convert to fraction form
    218,783.25/328,230.27 = 61,011.70/x
  3. Step 3: Cross multiply
    218,783.25x = 328,230.27 × 61,011.70
  4. Step 4: Simplify right side
    218,783.25x = 20,025,885,943.58
  5. Step 5: Solve for x
    x = 20,025,885,943.58/218,783.25
  6. Step 6: Final answer
    x = 91,532.99

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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.